diff --git a/src/js/cmdline.js b/src/js/cmdline.js
index 11f6f46..3886775 100644
--- a/src/js/cmdline.js
+++ b/src/js/cmdline.js
@@ -164,7 +164,7 @@ function make(output) {
 
 		for(var i = 0; i < objs.length; i++) {
 			var usage = "";
-			if(self.sources[i].endswith(".rc")) {
+			if(self.sources[i].endsWith(".rc")) {
 				usage = "RC";
 			} else if(pmake.isCxx(self.sources[i])) {
 				usage = "CXX";