diff --git a/lib/c64scr.c65 b/lib/c64scr.c65
index c52e99e..c532152 100644
--- a/lib/c64scr.c65
+++ b/lib/c64scr.c65
@@ -3,22 +3,22 @@
 #DEFINE __C64_SCR = 1
 GOTO lib_c64scr_skip
 
-LABEL lib_c64scr_blank
-ASM
-  lda $d011
-  and #($ff-$10)
-  sta $d011
-ENDASM
+FUNC lib_c64scr_blank
+  ASM
+    lda $d011
+    and #($ff-$10)
+    sta $d011
+  ENDASM
+FEND
 
-SUBEND
 
-LABEL lib_c64scr_show
-ASM
-  lda $d011
-  ora #$10
-  sta $d011
-ENDASM
-SUBEND
+FUNC lib_c64scr_show
+  ASM
+    lda $d011
+    ora #$10
+    sta $d011
+  ENDASM
+FEND
 
 LABEL lib_c64scr_skip