diff --git a/Makefile b/Makefile
index 227c2b27fb8a1863a869016e964452bdfb51d0ff..11881035812f9bf0a68667b960b0e89518ddd4b8 100644
--- a/Makefile
+++ b/Makefile
@@ -41,7 +41,7 @@ bin/tmp: bin/fc.js src/gui/mainMenu/AlphaDisclaimer.tw
 	rm -f bin/fc.js
 
 src/gui/mainMenu/AlphaDisclaimer.tw:
-	sed -Ei "s/build .releaseID/\0 commit $(COMMIT)/" $@
+	sed -Ei "s/build: .releaseID/\0 commit $(COMMIT)/" $@
 
 bin/:
 	mkdir -p $@