diff --git a/lang/cem/libcc.ansi/pmfile b/lang/cem/libcc.ansi/pmfile
index d0f4631af..21ac99219 100644
--- a/lang/cem/libcc.ansi/pmfile
+++ b/lang/cem/libcc.ansi/pmfile
@@ -43,7 +43,7 @@ local libc = acklibrary {
 				"%U%/isascii.c",
 			},
 			command = {
-				"cd %out[1]:dirname% && %in[1]%"
+				"cd %out[1]:dirname% && sh %in[1]%"
 			},
 			
 			file (d.."ctype/genfiles")