diff --git a/Makefile b/Makefile
index b8b5e2e934337e3b681d8723e8f5e621fc2b4318..85ad68846babdd4422fbc53ed3dfd56d132104f7 100644
--- a/Makefile
+++ b/Makefile
@@ -39,7 +39,7 @@ SUBDIR_MAKEFLAGS=$(if $(V),,--no-print-directory)
 SUBDIR_DEVICES_MAK=$(patsubst %, %/config-devices.mak, $(TARGET_DIRS))
 
 config-all-devices.mak: $(SUBDIR_DEVICES_MAK)
-	$(call quiet-command,cat $(SUBDIR_DEVICES_MAK) | grep "=y$$" | sort -u > $@,"  GEN   $@")
+	$(call quiet-command,cat $(SUBDIR_DEVICES_MAK) | grep =y | sort -u > $@,"  GEN   $@")
 
 %/config-devices.mak: default-configs/%.mak
 	$(call quiet-command,cat $< > $@.tmp, "  GEN   $@")