diff --git a/mach/vax4/libcc/compmodule b/mach/vax4/libcc/compmodule
index 491f6d251..a794a2257 100755
--- a/mach/vax4/libcc/compmodule
+++ b/mach/vax4/libcc/compmodule
@@ -1,2 +1,4 @@
-${MACH?} -I../../../h ${MACHFL?} $1 1>&2
-echo `basename $1 $2`.o
+if ${MACH?} -I../../../h ${MACHFL?} $1 1>&2
+then echo `basename $1 $2`.o
+else exit 1
+fi