diff --git a/Mac.xcodeproj/project.pbxproj b/Mac.xcodeproj/project.pbxproj
index ce5a082d..8d198c7f 100644
--- a/Mac.xcodeproj/project.pbxproj
+++ b/Mac.xcodeproj/project.pbxproj
@@ -743,7 +743,7 @@
 				GCC_ENABLE_OBJC_GC = unsupported;
 				GCC_MODEL_TUNING = G5;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
-				GCC_PREFIX_HEADER = Mac_Prefix.pch;
+				GCC_PREFIX_HEADER = "Mac Sample/Mac_Prefix.pch";
 				HEADER_SEARCH_PATHS = "${SDK_DIR}/usr/include/libxml2";
 				INFOPLIST_FILE = "Mac Sample/Info.plist";
 				INSTALL_PATH = "$(HOME)/Applications";