diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst
index 07650ee..934a7a8 100644
--- a/scripts/Makefile.modinst
+++ b/scripts/Makefile.modinst
@@ -9,7 +9,8 @@ include scripts/Kbuild.include
 
 #
 
-__modules := $(sort $(shell grep -h '\.ko$$' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
+__modules := $(sort $(foreach f,$(wildcard $(MODVERDIR)/*.mod),$(shell \
+    grep -h '\.ko$$' '$f')))
 modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
 
 PHONY += $(modules)