diff --git a/src/cocoa_monitor.m b/src/cocoa_monitor.m
index 190c1cdfe..e7aec2b1e 100644
--- a/src/cocoa_monitor.m
+++ b/src/cocoa_monitor.m
@@ -97,8 +97,8 @@ static GLboolean modeIsGood(CGDisplayModeRef mode)
 static GLFWvidmode vidmodeFromCGDisplayMode(CGDisplayModeRef mode)
 {
     GLFWvidmode result;
-    result.width = CGDisplayModeGetWidth(mode);
-    result.height = CGDisplayModeGetHeight(mode);
+    result.width = (int) CGDisplayModeGetWidth(mode);
+    result.height = (int) CGDisplayModeGetHeight(mode);
     result.refreshRate = (int) CGDisplayModeGetRefreshRate(mode);
 
     CFStringRef format = CGDisplayModeCopyPixelEncoding(mode);
diff --git a/src/cocoa_window.m b/src/cocoa_window.m
index e5d7d18e1..85dfa6363 100644
--- a/src/cocoa_window.m
+++ b/src/cocoa_window.m
@@ -519,7 +519,7 @@ static int translateKey(unsigned int key)
 - (void)otherMouseDown:(NSEvent *)event
 {
     _glfwInputMouseClick(window,
-                         [event buttonNumber],
+                         (int) [event buttonNumber],
                          GLFW_PRESS,
                          translateFlags([event modifierFlags]));
 }
@@ -532,7 +532,7 @@ static int translateKey(unsigned int key)
 - (void)otherMouseUp:(NSEvent *)event
 {
     _glfwInputMouseClick(window,
-                         [event buttonNumber],
+                         (int) [event buttonNumber],
                          GLFW_RELEASE,
                          translateFlags([event modifierFlags]));
 }
@@ -783,7 +783,8 @@ static void createMenuBar(void)
 
     // Prior to Snow Leopard, we need to use this oddly-named semi-private API
     // to get the application menu working properly.
-    [NSApp performSelector:@selector(setAppleMenu:) withObject:appMenu];
+    SEL setAppleMenuSelector = NSSelectorFromString(@"setAppleMenu:");
+    [NSApp performSelector:setAppleMenuSelector withObject:appMenu];
 }
 
 #endif /* _GLFW_USE_MENUBAR */