diff --git a/src/test/run-make/trace-macros-flag/Makefile b/src/test/run-make/trace-macros-flag/Makefile
index 4dfa238413dd..88a52773c01d 100644
--- a/src/test/run-make/trace-macros-flag/Makefile
+++ b/src/test/run-make/trace-macros-flag/Makefile
@@ -5,5 +5,5 @@
 -include ../tools.mk
 
 all:
-	$(RUSTC) -Z trace-macros hello.rs &> $(TMPDIR)/hello.trace
-	diff -u $(TMPDIR)/hello.trace hello.trace
+	$(RUSTC) -Z trace-macros hello.rs &> $(TMPDIR)/hello.out
+	diff -u $(TMPDIR)/hello.out hello.trace