diff --git a/tools/build/depend-cleanup.sh b/tools/build/depend-cleanup.sh
index 828586e9d231..cb2551fced78 100755
--- a/tools/build/depend-cleanup.sh
+++ b/tools/build/depend-cleanup.sh
@@ -89,11 +89,12 @@ run()
 # $1 directory
 # $2 source filename w/o extension
 # $3 source extension
+# $4 optional regex for egrep -w
 clean_dep()
 {
 	for libcompat in "" $ALL_libcompats; do
 		dirprfx=${libcompat:+obj-lib${libcompat}/}
-		if egrep -qw "$2\.$3" "$OBJTOP"/$dirprfx$1/.depend.$2.*o 2>/dev/null; then
+		if egrep -qw "${4:-$2\.$3}" "$OBJTOP"/$dirprfx$1/.depend.$2.*o 2>/dev/null; then
 			echo "Removing stale ${libcompat:+lib${libcompat} }dependencies and objects for $2.$3"
 			run rm -f \
 			    "$OBJTOP"/$dirprfx$1/.depend.$2.* \