diff --git a/src/rust-cocoa b/src/rust-cocoa
index 0f0f4aeff30..9a43115ca9f 160000
--- a/src/rust-cocoa
+++ b/src/rust-cocoa
@@ -1 +1 @@
-Subproject commit 0f0f4aeff308b95b356ac35ed8cce532100c4560
+Subproject commit 9a43115ca9f5309543f0646252a3d420fdd40628
diff --git a/src/servo/osmain.rs b/src/servo/osmain.rs
index 0e340036a9d..3793723892d 100644
--- a/src/servo/osmain.rs
+++ b/src/servo/osmain.rs
@@ -56,7 +56,7 @@ mod platform {
     mod NSApp {
          fn setDelegate(nsapp: id, main: id) {
 	     #debug("NSApp::setDelegate");
-	     let sel = str::as_c_str("setDelegate") { |s|
+	     let sel = str::as_c_str("setDelegate:") { |s|
 	         objc::sel_registerName(s)
 	     };
 	     cocoa::msgSend1Id(nsapp, sel, main);