diff --git a/src/html/htmlctrl/webkit/webkit.mm b/src/html/htmlctrl/webkit/webkit.mm
index 7a7b41a55e..bfd0a466e7 100644
--- a/src/html/htmlctrl/webkit/webkit.mm
+++ b/src/html/htmlctrl/webkit/webkit.mm
@@ -28,6 +28,12 @@
 
 #define DEBUG_WEBKIT_SIZING 0
 
+#if defined(MAC_OS_X_VERSION_10_11) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_11)
+    #define wxWEBKIT_PROTOCOL_SINCE_10_11(proto) < proto >
+#else
+    #define wxWEBKIT_PROTOCOL_SINCE_10_11(proto)
+#endif
+
 extern WXDLLEXPORT_DATA(const char) wxWebKitCtrlNameStr[] = "webkitctrl";
 
 // ----------------------------------------------------------------------------
@@ -130,7 +136,7 @@ inline int wxNavTypeFromWebNavType(int type){
     return wxWEBKIT_NAV_OTHER;
 }
 
-@interface MyFrameLoadMonitor : NSObject <WebFrameLoadDelegate>
+@interface MyFrameLoadMonitor : NSObject wxWEBKIT_PROTOCOL_SINCE_10_11(WebFrameLoadDelegate)
 {
     wxWebKitCtrl* webKitWindow;
 }
@@ -139,7 +145,7 @@ inline int wxNavTypeFromWebNavType(int type){
 
 @end
 
-@interface MyPolicyDelegate : NSObject <WebPolicyDelegate>
+@interface MyPolicyDelegate : NSObject wxWEBKIT_PROTOCOL_SINCE_10_11(WebPolicyDelegate)
 {
     wxWebKitCtrl* webKitWindow;
 }
@@ -148,7 +154,7 @@ inline int wxNavTypeFromWebNavType(int type){
 
 @end
 
-@interface MyUIDelegate : NSObject <WebUIDelegate>
+@interface MyUIDelegate : NSObject wxWEBKIT_PROTOCOL_SINCE_10_11(WebUIDelegate)
 {
     wxWebKitCtrl* webKitWindow;
 }
diff --git a/src/osx/webview_webkit.mm b/src/osx/webview_webkit.mm
index 1c8e4f03f9..5eb143ed84 100644
--- a/src/osx/webview_webkit.mm
+++ b/src/osx/webview_webkit.mm
@@ -41,6 +41,12 @@
 
 #define DEBUG_WEBKIT_SIZING 0
 
+#if defined(MAC_OS_X_VERSION_10_11) && (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_11)
+    #define wxWEBKIT_PROTOCOL_SINCE_10_11(proto) < proto >
+#else
+    #define wxWEBKIT_PROTOCOL_SINCE_10_11(proto)
+#endif
+
 // ----------------------------------------------------------------------------
 // macros
 // ----------------------------------------------------------------------------
@@ -50,7 +56,7 @@ wxIMPLEMENT_DYNAMIC_CLASS(wxWebViewWebKit, wxWebView);
 wxBEGIN_EVENT_TABLE(wxWebViewWebKit, wxControl)
 wxEND_EVENT_TABLE()
 
-@interface WebViewLoadDelegate : NSObject <WebFrameLoadDelegate>
+@interface WebViewLoadDelegate : NSObject wxWEBKIT_PROTOCOL_SINCE_10_11(WebFrameLoadDelegate)
 {
     wxWebViewWebKit* webKitWindow;
 }
@@ -59,7 +65,7 @@ wxEND_EVENT_TABLE()
 
 @end
 
-@interface WebViewPolicyDelegate : NSObject <WebPolicyDelegate>
+@interface WebViewPolicyDelegate : NSObject wxWEBKIT_PROTOCOL_SINCE_10_11(WebPolicyDelegate)
 {
     wxWebViewWebKit* webKitWindow;
 }
@@ -68,7 +74,7 @@ wxEND_EVENT_TABLE()
 
 @end
 
-@interface WebViewUIDelegate : NSObject <WebUIDelegate>
+@interface WebViewUIDelegate : NSObject wxWEBKIT_PROTOCOL_SINCE_10_11(WebUIDelegate)
 {
     wxWebViewWebKit* webKitWindow;
 }