diff --git a/mach/z80/libcc/compmodule b/mach/z80/libcc/compmodule
index 284613267..9db6d7147 100755
--- a/mach/z80/libcc/compmodule
+++ b/mach/z80/libcc/compmodule
@@ -1,2 +1,4 @@
-${MACH?} -I../../../h ${MACHFL?} $1 1>&2
-echo `basename $1 $2`.s
+if ${MACH?ack} -I../../../h ${MACHFL?} $1 1>&2
+then echo `basename $1 $2`.s
+else rm -f `basename $1 $2`.s
+fi
diff --git a/mach/z80/libpc/compmodule b/mach/z80/libpc/compmodule
index 4a77cd8a0..9db6d7147 100755
--- a/mach/z80/libpc/compmodule
+++ b/mach/z80/libpc/compmodule
@@ -1,2 +1,4 @@
-${MACH?} -DCPM -I../../../h ${MACHFL?} $1 1>&2
-echo `basename $1 $2`.s
+if ${MACH?ack} -I../../../h ${MACHFL?} $1 1>&2
+then echo `basename $1 $2`.s
+else rm -f `basename $1 $2`.s
+fi