diff --git a/BasiliskII/src/MacOSX/clip_macosx.cpp b/BasiliskII/src/MacOSX/clip_macosx.cpp
index 8ca71549..1d37edfc 100644
--- a/BasiliskII/src/MacOSX/clip_macosx.cpp
+++ b/BasiliskII/src/MacOSX/clip_macosx.cpp
@@ -159,6 +159,16 @@ void GetScrap(void **handle, uint32 type, int32 offset)
 #endif
 }
 
+/*
+ * ZeroScrap() is called before a Mac application writes to the clipboard; clears out the previous contents
+ */
+
+void ZeroScrap()
+{
+	D(bug("ZeroScrap\n"));
+	
+	we_put_this_data = false;
+}
 
 /*
  *  Mac application wrote to clipboard