s/SUB/BGNSUB/
diff --git a/src/mesa/shader/prog_print.c b/src/mesa/shader/prog_print.c
index 3ab0041..8fa7ef3 100644
--- a/src/mesa/shader/prog_print.c
+++ b/src/mesa/shader/prog_print.c
@@ -629,7 +629,7 @@
       break;
 
    case OPCODE_BGNSUB:
-      _mesa_printf("SUB");
+      _mesa_printf("BGNSUB");
       print_comment(inst);
       return indent + 3;
    case OPCODE_ENDSUB: