diff --git a/modules/graphics/src/main/native-glass/mac/GlassScreen.m b/modules/graphics/src/main/native-glass/mac/GlassScreen.m
--- a/modules/graphics/src/main/native-glass/mac/GlassScreen.m
+++ b/modules/graphics/src/main/native-glass/mac/GlassScreen.m
@@ -71,6 +71,9 @@
 
         NSRect primaryFrame = [[[NSScreen screens] objectAtIndex:0] frame];
 
+        //Yosemite: we can't rely on the objects returned by [NSScreen screens] not getting released
+        [screen retain];
+
         jscreen = (jobject)(*env)->NewObject(env, jScreenClass, screenInit,
                                              ptr_to_jlong(screen),