diff --git a/desmume/src/cocoa/cocoa_core.mm b/desmume/src/cocoa/cocoa_core.mm
index b8c72de8e..7bbf12d6a 100644
--- a/desmume/src/cocoa/cocoa_core.mm
+++ b/desmume/src/cocoa/cocoa_core.mm
@@ -739,7 +739,7 @@ static void* RunCoreThread(void *arg)
 		pthread_mutex_lock(&param->mutexOutputList);
 		for(CocoaDSOutput *cdsOutput in cdsOutputList)
 		{
-			if (param->framesToSkip > 0 && [cdsOutput isMemberOfClass:[CocoaDSDisplay class]])
+			if (param->framesToSkip > 0 && [cdsOutput isKindOfClass:[CocoaDSDisplay class]])
 			{
 				continue;
 			}
diff --git a/desmume/src/cocoa/userinterface/inputPrefsView.h b/desmume/src/cocoa/userinterface/inputPrefsView.h
index a20816460..8469bc7ac 100644
--- a/desmume/src/cocoa/userinterface/inputPrefsView.h
+++ b/desmume/src/cocoa/userinterface/inputPrefsView.h
@@ -38,7 +38,11 @@
 
 #pragma mark -
 
+#if MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_5
 @interface InputPrefsView : NSView <InputHIDManagerTarget, NSOutlineViewDelegate, NSOutlineViewDataSource>
+#else
+@interface InputPrefsView : NSView <InputHIDManagerTarget>
+#endif
 {
 	NSWindow *prefWindow;
 	NSOutlineView *inputPrefOutlineView;