diff --git a/GNUmakefile b/GNUmakefile
index efc70b0ae8..0a85cb60b5 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -1000,6 +1000,7 @@ endif
 tools:
 	cd internal/tools && go generate -tags tools ./
 
+LINTFILESCMD=find src/os/ src/reflect/ -type f -name '*.go'
 .PHONY: lint
 lint: tools ## Lint source tree
 	revive -version
@@ -1007,7 +1008,10 @@ lint: tools ## Lint source tree
 	# revive.toml isn't flexible enough to filter out just one kind of error from a checker, so do it with grep here.
 	# Can't use grep with friendly formatter.  Plain output isn't too bad, though.
 	# Use 'grep .' to get rid of stray blank line
-	revive -config revive.toml compiler/... src/{os,reflect}/*.go | grep -v "should have comment or be unexported" | grep '.' | awk '{print}; END {exit NR>0}'
+	revive -config revive.toml compiler/... $$( $(LINTFILESCMD) ) \
+		| grep -v "should have comment or be unexported" \
+		| grep '.' \
+		| awk '{print}; END {exit NR>0}'
 
 SPELLDIRSCMD=find . -depth 1 -type d  | egrep -wv '.git|lib|llvm|src'; find src -depth 1 | egrep -wv 'device|internal|net|vendor'; find src/internal -depth 1 -type d | egrep -wv src/internal/wasi
 .PHONY: spell