diff --git a/SystemInformer/mainwnd.c b/SystemInformer/mainwnd.c
index 2cbb331f998e..d8eaf9de9c7a 100644
--- a/SystemInformer/mainwnd.c
+++ b/SystemInformer/mainwnd.c
@@ -1749,11 +1749,13 @@ VOID PhMwpOnCommand(
             PPH_PROCESS_ITEM *processes;
             ULONG numberOfProcesses;
 
-            PhGetSelectedProcessItems(&processes, &numberOfProcesses);
-            PhReferenceObjects(processes, numberOfProcesses);
-            PhUiReduceWorkingSetProcesses(WindowHandle, processes, numberOfProcesses);
-            PhDereferenceObjects(processes, numberOfProcesses);
-            PhFree(processes);
+            if (PhGetSelectedProcessItems(&processes, &numberOfProcesses))
+            {
+                PhReferenceObjects(processes, numberOfProcesses);
+                PhUiReduceWorkingSetProcesses(WindowHandle, processes, numberOfProcesses);
+                PhDereferenceObjects(processes, numberOfProcesses);
+                PhFree(processes);
+            }
         }
         break;
     case ID_MISCELLANEOUS_RUNAS:
@@ -1805,11 +1807,13 @@ VOID PhMwpOnCommand(
             PPH_PROCESS_ITEM* processes;
             ULONG numberOfProcesses;
 
-            PhGetSelectedProcessItems(&processes, &numberOfProcesses);
-            PhReferenceObjects(processes, numberOfProcesses);
-            PhUiFlushHeapProcesses(WindowHandle, processes, numberOfProcesses);
-            PhDereferenceObjects(processes, numberOfProcesses);
-            PhFree(processes);
+            if (PhGetSelectedProcessItems(&processes, &numberOfProcesses))
+            {
+                PhReferenceObjects(processes, numberOfProcesses);
+                PhUiFlushHeapProcesses(WindowHandle, processes, numberOfProcesses);
+                PhDereferenceObjects(processes, numberOfProcesses);
+                PhFree(processes);
+            }
         }
         break;
     case ID_PRIORITY_REALTIME:
@@ -1822,11 +1826,13 @@ VOID PhMwpOnCommand(
             PPH_PROCESS_ITEM *processes;
             ULONG numberOfProcesses;
 
-            PhGetSelectedProcessItems(&processes, &numberOfProcesses);
-            PhReferenceObjects(processes, numberOfProcesses);
-            PhMwpExecuteProcessPriorityCommand(WindowHandle, Id, processes, numberOfProcesses);
-            PhDereferenceObjects(processes, numberOfProcesses);
-            PhFree(processes);
+            if (PhGetSelectedProcessItems(&processes, &numberOfProcesses))
+            {
+                PhReferenceObjects(processes, numberOfProcesses);
+                PhMwpExecuteProcessPriorityCommand(WindowHandle, Id, processes, numberOfProcesses);
+                PhDereferenceObjects(processes, numberOfProcesses);
+                PhFree(processes);
+            }
         }
         break;
     case ID_IOPRIORITY_VERYLOW:
@@ -1837,11 +1843,13 @@ VOID PhMwpOnCommand(
             PPH_PROCESS_ITEM *processes;
             ULONG numberOfProcesses;
 
-            PhGetSelectedProcessItems(&processes, &numberOfProcesses);
-            PhReferenceObjects(processes, numberOfProcesses);
-            PhMwpExecuteProcessIoPriorityCommand(WindowHandle, Id, processes, numberOfProcesses);
-            PhDereferenceObjects(processes, numberOfProcesses);
-            PhFree(processes);
+            if (PhGetSelectedProcessItems(&processes, &numberOfProcesses))
+            {
+                PhReferenceObjects(processes, numberOfProcesses);
+                PhMwpExecuteProcessIoPriorityCommand(WindowHandle, Id, processes, numberOfProcesses);
+                PhDereferenceObjects(processes, numberOfProcesses);
+                PhFree(processes);
+            }
         }
         break;
     case ID_MISCELLANEOUS_ECOMODE:
diff --git a/SystemInformer/mwpgproc.c b/SystemInformer/mwpgproc.c
index ffc194e28c23..84e724a506e6 100644
--- a/SystemInformer/mwpgproc.c
+++ b/SystemInformer/mwpgproc.c
@@ -976,9 +976,7 @@ VOID PhShowProcessContextMenu(
     PPH_PROCESS_ITEM *processes;
     ULONG numberOfProcesses;
 
-    PhGetSelectedProcessItems(&processes, &numberOfProcesses);
-
-    if (numberOfProcesses != 0)
+    if (PhGetSelectedProcessItems(&processes, &numberOfProcesses))
     {
         PPH_EMENU menu;
         PPH_EMENU_ITEM item;
@@ -1025,9 +1023,9 @@ VOID PhShowProcessContextMenu(
         }
 
         PhDestroyEMenu(menu);
-    }
 
-    PhFree(processes);
+        PhFree(processes);
+    }
 }
 
 VOID NTAPI PhMwpProcessAddedHandler(
diff --git a/SystemInformer/proctree.c b/SystemInformer/proctree.c
index b5bd3531f3bb..d10616456409 100644
--- a/SystemInformer/proctree.c
+++ b/SystemInformer/proctree.c
@@ -5286,6 +5286,9 @@ BOOLEAN PhGetSelectedProcessItems(
     }
     else
     {
+        *NumberOfProcesses = 0;
+        *Processes = NULL;
+        PhDeleteArray(&array);
         return FALSE;
     }
 }
diff --git a/plugins/UserNotes/main.c b/plugins/UserNotes/main.c
index 733cb7b81534..14b21056dc7c 100644
--- a/plugins/UserNotes/main.c
+++ b/plugins/UserNotes/main.c
@@ -1693,27 +1693,29 @@ VOID NTAPI MenuHookCallback(
             ULONG numberOfProcesses;
             ULONG i;
 
-            PhGetSelectedProcessItems(&processes, &numberOfProcesses);
-            LockDb();
-
-            for (i = 0; i < numberOfProcesses; i++)
+            if (PhGetSelectedProcessItems(&processes, &numberOfProcesses))
             {
-                PDB_OBJECT object;
+                LockDb();
 
-                if (object = FindDbObjectForProcess(processes[i], INTENT_PROCESS_PRIORITY_CLASS))
+                for (i = 0; i < numberOfProcesses; i++)
                 {
-                    ULONG newPriorityClass = GetPriorityClassFromId(id);
+                    PDB_OBJECT object;
 
-                    if (object->PriorityClass != newPriorityClass)
+                    if (object = FindDbObjectForProcess(processes[i], INTENT_PROCESS_PRIORITY_CLASS))
                     {
-                        object->PriorityClass = newPriorityClass;
-                        changed = TRUE;
+                        ULONG newPriorityClass = GetPriorityClassFromId(id);
+
+                        if (object->PriorityClass != newPriorityClass)
+                        {
+                            object->PriorityClass = newPriorityClass;
+                            changed = TRUE;
+                        }
                     }
                 }
-            }
 
-            UnlockDb();
-            PhFree(processes);
+                UnlockDb();
+                PhFree(processes);
+            }
 
             if (changed)
                 SaveDb();
@@ -1729,27 +1731,29 @@ VOID NTAPI MenuHookCallback(
             ULONG numberOfProcesses;
             ULONG i;
 
-            PhGetSelectedProcessItems(&processes, &numberOfProcesses);
-            LockDb();
-
-            for (i = 0; i < numberOfProcesses; i++)
+            if (PhGetSelectedProcessItems(&processes, &numberOfProcesses))
             {
-                PDB_OBJECT object;
+                LockDb();
 
-                if (object = FindDbObjectForProcess(processes[i], INTENT_PROCESS_IO_PRIORITY))
+                for (i = 0; i < numberOfProcesses; i++)
                 {
-                    ULONG newIoPriorityPlusOne = GetIoPriorityFromId(id) + 1;
+                    PDB_OBJECT object;
 
-                    if (object->IoPriorityPlusOne != newIoPriorityPlusOne)
+                    if (object = FindDbObjectForProcess(processes[i], INTENT_PROCESS_IO_PRIORITY))
                     {
-                        object->IoPriorityPlusOne = newIoPriorityPlusOne;
-                        changed = TRUE;
+                        ULONG newIoPriorityPlusOne = GetIoPriorityFromId(id) + 1;
+
+                        if (object->IoPriorityPlusOne != newIoPriorityPlusOne)
+                        {
+                            object->IoPriorityPlusOne = newIoPriorityPlusOne;
+                            changed = TRUE;
+                        }
                     }
                 }
-            }
 
-            UnlockDb();
-            PhFree(processes);
+                UnlockDb();
+                PhFree(processes);
+            }
 
             if (changed)
                 SaveDb();
@@ -1766,27 +1770,29 @@ VOID NTAPI MenuHookCallback(
             ULONG numberOfProcesses;
             ULONG i;
 
-            PhGetSelectedProcessItems(&processes, &numberOfProcesses);
-            LockDb();
-
-            for (i = 0; i < numberOfProcesses; i++)
+            if (PhGetSelectedProcessItems(&processes, &numberOfProcesses))
             {
-                PDB_OBJECT object;
+                LockDb();
 
-                if (object = FindDbObjectForProcess(processes[i], INTENT_PROCESS_PAGEPRIORITY))
+                for (i = 0; i < numberOfProcesses; i++)
                 {
-                    ULONG newPagePriorityPlusOne = GetPagePriorityFromId(id) + 1;
+                    PDB_OBJECT object;
 
-                    if (object->PagePriorityPlusOne != newPagePriorityPlusOne)
+                    if (object = FindDbObjectForProcess(processes[i], INTENT_PROCESS_PAGEPRIORITY))
                     {
-                        object->PagePriorityPlusOne = newPagePriorityPlusOne;
-                        changed = TRUE;
+                        ULONG newPagePriorityPlusOne = GetPagePriorityFromId(id) + 1;
+
+                        if (object->PagePriorityPlusOne != newPagePriorityPlusOne)
+                        {
+                            object->PagePriorityPlusOne = newPagePriorityPlusOne;
+                            changed = TRUE;
+                        }
                     }
                 }
-            }
 
-            UnlockDb();
-            PhFree(processes);
+                UnlockDb();
+                PhFree(processes);
+            }
 
             if (changed)
                 SaveDb();
@@ -1997,7 +2003,7 @@ VOID TreeNewMessageCallback(
                     }
                     break;
                 }
-    
+
             }
             else if (message->TreeNewHandle == ServiceTreeNewHandle)
             {
@@ -2345,7 +2351,7 @@ VOID ProcessTreeNewInitializingCallback(
     affinity.Text = L"Affinity";
     affinity.Width = 120;
     affinity.Alignment = PH_ALIGN_LEFT;
-        
+
     PhPluginAddTreeNewColumn(PluginInstance, info->CmData, &column, COMMENT_COLUMN_ID, NULL, ProcessCommentSortFunction);
     PhPluginAddTreeNewColumn(PluginInstance, info->CmData, &affinity, AFFINITY_COLUMN_ID, NULL, ProcessAffinitySortFunction);
 }