diff --git a/source/Irrlicht/Irrlicht.xcodeproj/project.pbxproj b/source/Irrlicht/Irrlicht.xcodeproj/project.pbxproj
index 55d03109..6326988e 100644
--- a/source/Irrlicht/Irrlicht.xcodeproj/project.pbxproj
+++ b/source/Irrlicht/Irrlicht.xcodeproj/project.pbxproj
@@ -2451,10 +2451,7 @@
 			isa = PBXHeadersBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				5E8570BD1B7F9AC400B267D2 /* CIrrDeviceConsole.h in Headers */,
-				5E7908961C10EEC000DFE7FE /* COpenGLCommon.h in Headers */,
 				8493BC04249DED3F0092813E /* IMemoryReadFile.h in Headers */,
-				5E7908951C10EEC000DFE7FE /* COpenGLCacheHandler.h in Headers */,
 				8493BC02249DEBB30092813E /* IOctreeSceneNode.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -3161,7 +3158,7 @@
 		5E34C6DD1B7F4A0C00F212E8 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
@@ -3185,7 +3182,7 @@
 				DEPLOYMENT_LOCATION = YES;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
-				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_C_LANGUAGE_STANDARD = c11;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				"GCC_PREPROCESSOR_DEFINITIONS[arch=*]" = "DEBUG=1";
@@ -3208,7 +3205,7 @@
 		5E34C6DE1B7F4A0C00F212E8 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
@@ -3232,7 +3229,7 @@
 				DEPLOYMENT_LOCATION = YES;
 				DEPLOYMENT_POSTPROCESSING = YES;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
-				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_C_LANGUAGE_STANDARD = c11;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = fast;
 				"GCC_PREPROCESSOR_DEFINITIONS[arch=*]" = "NDEBUG=1";