diff --git a/src/glue.prorwts2.a b/src/glue.prorwts2.a
index 5ebcc2f9d..09253e33a 100644
--- a/src/glue.prorwts2.a
+++ b/src/glue.prorwts2.a
@@ -521,6 +521,7 @@ ProDOS_enter
     pla
     tax
     lda    #0
+    clc
     jmp    ProDOS_exit
 
 @handle