diff --git a/modules/common/chowdsp_data_structures/Allocators/chowdsp_ChainedArenaAllocator.h b/modules/common/chowdsp_data_structures/Allocators/chowdsp_ChainedArenaAllocator.h
index e52dcaad9..c616a9033 100644
--- a/modules/common/chowdsp_data_structures/Allocators/chowdsp_ChainedArenaAllocator.h
+++ b/modules/common/chowdsp_data_structures/Allocators/chowdsp_ChainedArenaAllocator.h
@@ -133,6 +133,7 @@ class ChainedArenaAllocator
         return bytes_count;
     }
 
+    /** Merges another allocator into this one, and invalidates the other allocator. */
     void merge (ChainedArenaAllocator& allocator_to_merge)
     {
         if (allocator_to_merge.arena_count == 0)