diff --git a/webrtc/examples/BUILD.gn b/webrtc/examples/BUILD.gn
index 0098d69781..d575c65b09 100644
--- a/webrtc/examples/BUILD.gn
+++ b/webrtc/examples/BUILD.gn
@@ -399,10 +399,6 @@ if (is_ios || (is_mac && target_cpu != "x86")) {
     cflags_objc = [
       # Enabled for cflags_objc in build/config/compiler/BUILD.gn.
       "-Wno-objc-missing-property-synthesis",
-
-      # Hide the warning for SecRandomCopyBytes(), until we update to upstream.
-      # https://bugs.chromium.org/p/webrtc/issues/detail?id=6396
-      "-Wno-unused-result",
     ]
   }
 
diff --git a/webrtc/examples/objc/AppRTCMobile/third_party/SocketRocket/SRWebSocket.m b/webrtc/examples/objc/AppRTCMobile/third_party/SocketRocket/SRWebSocket.m
index b4868a7898..b9148cd384 100644
--- a/webrtc/examples/objc/AppRTCMobile/third_party/SocketRocket/SRWebSocket.m
+++ b/webrtc/examples/objc/AppRTCMobile/third_party/SocketRocket/SRWebSocket.m
@@ -504,7 +504,7 @@ static __strong NSData *CRLFCRLF;
     CFHTTPMessageSetHeaderFieldValue(request, CFSTR("Host"), (__bridge CFStringRef)(_url.port ? [NSString stringWithFormat:@"%@:%@", _url.host, _url.port] : _url.host));
         
     NSMutableData *keyBytes = [[NSMutableData alloc] initWithLength:16];
-    SecRandomCopyBytes(kSecRandomDefault, keyBytes.length, keyBytes.mutableBytes);
+    assert(!SecRandomCopyBytes(kSecRandomDefault, keyBytes.length, keyBytes.mutableBytes));
     
     if ([keyBytes respondsToSelector:@selector(base64EncodedStringWithOptions:)]) {
         _secKey = [keyBytes base64EncodedStringWithOptions:0];
@@ -528,7 +528,7 @@ static __strong NSData *CRLFCRLF;
     [_urlRequest.allHTTPHeaderFields enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
         CFHTTPMessageSetHeaderFieldValue(request, (__bridge CFStringRef)key, (__bridge CFStringRef)obj);
     }];
-    
+
     NSData *message = CFBridgingRelease(CFHTTPMessageCopySerializedMessage(request));
     
     CFRelease(request);
@@ -1361,7 +1361,7 @@ static const size_t SRFrameHeaderOverhead = 32;
         }
     } else {
         uint8_t *mask_key = frame_buffer + frame_buffer_size;
-        SecRandomCopyBytes(kSecRandomDefault, sizeof(uint32_t), (uint8_t *)mask_key);
+        assert(!SecRandomCopyBytes(kSecRandomDefault, sizeof(uint32_t), (uint8_t *)mask_key));
         frame_buffer_size += sizeof(uint32_t);
         
         // TODO: could probably optimize this with SIMD