diff --git a/Modules/Mk/ov.module.mk b/Modules/Mk/ov.module.mk
index 89d0954b8..11feb8f57 100644
--- a/Modules/Mk/ov.module.mk
+++ b/Modules/Mk/ov.module.mk
@@ -187,11 +187,9 @@ LIBTOOL=$(shell ../Mk/find-libtool.pl)
 
 
 ifeq ("$(OS_COMPILE)", "Darwin")
-	GCC=/usr/bin/gcc-4.0
-	GPP=/usr/bin/g++-4.0
     override INC+=-I../SharedHeaders
-    ARCH=-arch i386 -arch ppc 
-    SDK=/Developer/SDKs/MacOSX10.4u.sdk
+    ARCH=-arch i386
+    SDK=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk
     override CFLAGS+=$(ARCH) -O2 -Wall $(INC) -isysroot ${SDK} \
         -F../ -F/Library/Frameworks/
     override LDFLAGS+= $(ARCH) -isysroot ${SDK}
diff --git a/Modules/OVIMSpaceChewing/OVIMSpaceChewing.xcodeproj/project.pbxproj b/Modules/OVIMSpaceChewing/OVIMSpaceChewing.xcodeproj/project.pbxproj
index 030792236..ec4c632b3 100644
--- a/Modules/OVIMSpaceChewing/OVIMSpaceChewing.xcodeproj/project.pbxproj
+++ b/Modules/OVIMSpaceChewing/OVIMSpaceChewing.xcodeproj/project.pbxproj
@@ -295,7 +295,7 @@
 					i386,
 				);
 				COPY_PHASE_STRIP = NO;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
+				SDKROOT = /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk;
 			};
 			name = Debug;
 		};
@@ -307,7 +307,7 @@
 					i386,
 				);
 				COPY_PHASE_STRIP = YES;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
+				SDKROOT = /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk;
 			};
 			name = Release;
 		};