diff --git a/ide/frames/editor_mouseaction_options.lfm b/ide/frames/editor_mouseaction_options.lfm
index a340ed45c4..6a5100c562 100644
--- a/ide/frames/editor_mouseaction_options.lfm
+++ b/ide/frames/editor_mouseaction_options.lfm
@@ -54,7 +54,7 @@ inherited EditorMouseOptionsFrame: TEditorMouseOptionsFrame
       Height = 378
       Top = 0
       Width = 5
-      MinSize = 25
+      MinSize = 100
     end
   end
   object p3: TPanel[1]
diff --git a/ide/frames/editor_mouseaction_options.lrs b/ide/frames/editor_mouseaction_options.lrs
index 8898e8dcbf..09634b3e18 100644
--- a/ide/frames/editor_mouseaction_options.lrs
+++ b/ide/frames/editor_mouseaction_options.lrs
@@ -20,7 +20,7 @@ LazarusResources.Add('TEditorMouseOptionsFrame','FORMDATA',[
   +#11#13'tvoAutoExpand'#17'tvoAutoItemHeight'#16'tvoHideSelection'#21'tvoKeepC'
   +'ollapsedNodes'#11'tvoReadOnly'#14'tvoShowButtons'#12'tvoShowLines'#11'tvoSh'
   +'owRoot'#11'tvoToolTips'#0#0#0#9'TSplitter'#9'Splitter1'#4'Left'#3#130#0#6'H'
-  +'eight'#3'z'#1#3'Top'#2#0#5'Width'#2#5#7'MinSize'#2#25#0#0#0#242#2#1#6'TPane'
+  +'eight'#3'z'#1#3'Top'#2#0#5'Width'#2#5#7'MinSize'#2'd'#0#0#0#242#2#1#6'TPane'
   +'l'#2'p3'#23'AnchorSideRight.Control'#7#2'p2'#20'AnchorSideRight.Side'#7#9'a'
   +'srBottom'#24'AnchorSideBottom.Control'#7#2'p2'#21'AnchorSideBottom.Side'#7#9
   +'asrBottom'#4'Left'#2#0#6'Height'#2'%'#3'Top'#3'z'#1#5'Width'#3'b'#2#5'Align'
diff --git a/ide/frames/editor_mouseaction_options.pas b/ide/frames/editor_mouseaction_options.pas
index 82b09e4d2b..f9f665cfda 100644
--- a/ide/frames/editor_mouseaction_options.pas
+++ b/ide/frames/editor_mouseaction_options.pas
@@ -27,8 +27,7 @@ interface
 uses
   LResources, EditorOptions, LazarusIDEStrConsts, IDEOptionsIntf, sysutils,
   StdCtrls, ExtCtrls, Classes, Controls, LCLProc, Grids, ComCtrls, Dialogs,
-  SynEditMouseCmds, editor_mouseaction_options_dlg;
-//  SynGutterCodeFolding;
+  SynEditMouseCmds, editor_mouseaction_options_dlg, math;
 
 type
 
@@ -177,7 +176,7 @@ begin
   for i := 0 to ActionGrid.ColCount-1 do j := j + ActionGrid.ColWidths[i];
   k := ActionGrid.ClientWidth;
   for i := 0 to ActionGrid.ColCount-1 do
-    ActionGrid.ColWidths[i] := ActionGrid.ColWidths[i] * k div j;
+    ActionGrid.ColWidths[i] := Max(ActionGrid.ColWidths[i] * k div j, 10);
 end;
 
 procedure TEditorMouseOptionsFrame.ActionGridHeaderSized(Sender: TObject; IsColumn: Boolean;