diff --git a/Makefile b/Makefile
index 31ba9d1..8352b06 100644
--- a/Makefile
+++ b/Makefile
@@ -135,7 +135,7 @@ $(OUTBIN): .go/$(OUTBIN).stamp
 	        ./build/build.sh                                                     \
 	    "
 	@if ! cmp -s .go/$(OUTBIN) $(OUTBIN); then \
-	    cat .go/$(OUTBIN) > $(OUTBIN);         \
+	    mv .go/$(OUTBIN) $(OUTBIN);            \
 	    date >$@;                              \
 	fi