diff --git a/src/gui/plot_nolerp.cpp b/src/gui/plot_nolerp.cpp
index eefb4ea1b5..f4d03717d2 100644
--- a/src/gui/plot_nolerp.cpp
+++ b/src/gui/plot_nolerp.cpp
@@ -394,6 +394,8 @@ int PlotCustomEx(ImGuiPlotType plot_type, const char* label, float (*values_gett
           window->DrawList->AddLine(ImLerp(inner_bb.Min,inner_bb.Max,ImVec2(0.0f,histogram_zero_line_t)),ImLerp(inner_bb.Min,inner_bb.Max,ImVec2(1.0f,histogram_zero_line_t)),col_base);
         }
 
+        ImVec2 chevron[3];
+
         for (int n = 0; n < res_w; n++)
         {
             const float t1 = t0 + t_step;
@@ -421,11 +423,30 @@ int PlotCustomEx(ImGuiPlotType plot_type, const char* label, float (*values_gett
                 if (values_highlight!=NULL) {
                   if (values_highlight[v1_idx]) rCol=ImGui::GetColorU32(highlightColor);
                 }
-                window->DrawList->AddRectFilled(pos0, pos1, rCol);
+                if (blockMode) {
+                  if ((int)v0>=(int)(scale_max+0.5)) {
+                    float chScale=(pos1.x-pos0.x)*0.125;
+                    chevron[0]=ImVec2(pos0.x+(pos1.x-pos0.x)*0.25,pos1.y+4.0f*chScale);
+                    chevron[1]=ImVec2(pos0.x+(pos1.x-pos0.x)*0.5,pos1.y+2.0f*chScale);
+                    chevron[2]=ImVec2(pos0.x+(pos1.x-pos0.x)*0.75,pos1.y+4.0f*chScale);
+                    window->DrawList->AddPolyline(chevron, 3, rCol, 0, chScale);
+                  } else if ((int)v0<(int)(scale_min)) {
+                    float chScale=(pos1.x-pos0.x)*0.125;
+                    chevron[0]=ImVec2(pos0.x+(pos1.x-pos0.x)*0.25,pos1.y-4.0f*chScale);
+                    chevron[1]=ImVec2(pos0.x+(pos1.x-pos0.x)*0.5,pos1.y-2.0f*chScale);
+                    chevron[2]=ImVec2(pos0.x+(pos1.x-pos0.x)*0.75,pos1.y-4.0f*chScale);
+                    window->DrawList->AddPolyline(chevron, 3, rCol, 0, chScale);
+                  } else {
+                    window->DrawList->AddRectFilled(pos0, pos1, rCol);
+                  }
+                } else {
+                  window->DrawList->AddRectFilled(pos0, pos1, rCol);
+                }
             }
 
             t0 = t1;
             tp0 = tp1;
+            v0 = v1;
         }
     }