diff --git a/commands/Makefile b/commands/Makefile
index bf98674cd..863bea058 100755
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -37,6 +37,7 @@ biginstall: big
 
 clean::
 	cd $(BZIP2) && make clean
+	cd ibm && make clean
 	if [ -f $(FLEX)/Makefile ]; then cd $(FLEX) && make clean ; fi
 	for p in $(SMALLPROGRAMS); do ( cd $$p && make clean ); done