diff --git a/src/mac/carbon/toolbar.cpp b/src/mac/carbon/toolbar.cpp
index 7315b4cdf4..15e297d622 100644
--- a/src/mac/carbon/toolbar.cpp
+++ b/src/mac/carbon/toolbar.cpp
@@ -704,6 +704,9 @@ static pascal OSStatus ControlToolbarItemHandler( EventHandlerCallRef inCallRef,
                                 sz = wxSize(0,0) ;
                         }
                             
+                        // Extra width to avoid edge of combobox being cut off
+                        sz.x += 3;
+                        
                         HISize min, max;
                         min.width = max.width = sz.x ;
                         min.height = max.height = sz.y ;