diff --git a/invokeai/frontend/web/src/features/ui/hooks/usePanel.ts b/invokeai/frontend/web/src/features/ui/hooks/usePanel.ts
index 7b748e79a06..871bd931352 100644
--- a/invokeai/frontend/web/src/features/ui/hooks/usePanel.ts
+++ b/invokeai/frontend/web/src/features/ui/hooks/usePanel.ts
@@ -250,5 +250,5 @@ const getSizeAsPercentage = (
   });
 
   // The final value is a percentage of the available space
-  return (sizeInPixels / availableSpace) * 100;
+  return Math.min((sizeInPixels / availableSpace) * 100, 100);
 };