diff --git a/src/newt/native/MacNewtNSWindow.m b/src/newt/native/MacNewtNSWindow.m
index eef3278b9..0d6b1a6b9 100644
--- a/src/newt/native/MacNewtNSWindow.m
+++ b/src/newt/native/MacNewtNSWindow.m
@@ -848,7 +848,9 @@ + (BOOL) initNatives: (JNIEnv*) env forClass: (jclass) clazz
         insetsChangedID && sizeScreenPosInsetsChangedID &&
         screenPositionChangedID && focusChangedID && windowDestroyNotifyID && requestFocusID && windowRepaintID)
     {
-        CKCH_CreateDictionaries();
+        dispatch_async(dispatch_get_main_queue(), ^(){
+            CKCH_CreateDictionaries();
+        });
         return YES;
     }
     return NO;