diff --git a/imgui_internal.h b/imgui_internal.h
index 8bd05c326..29cfda0e7 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -2134,7 +2134,7 @@ struct ImGuiIDStackTool
     ImGuiTextBuffer         ResultPathsBuf;
     ImGuiTextBuffer         ResultTempBuf;
 
-    ImGuiIDStackTool()      { memset(this, 0, sizeof(*this)); OptHexEncodeNonAsciiChars = true; CopyToClipboardLastTime = -FLT_MAX; }
+    ImGuiIDStackTool()      { memset(this, 0, sizeof(*this)); LastActiveFrame = -1; OptHexEncodeNonAsciiChars = true; CopyToClipboardLastTime = -FLT_MAX; }
 };
 
 //-----------------------------------------------------------------------------