diff --git a/Transmission.xcodeproj/project.pbxproj b/Transmission.xcodeproj/project.pbxproj
index e9a64eed4..a218eafbf 100644
--- a/Transmission.xcodeproj/project.pbxproj
+++ b/Transmission.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 42;
+	objectVersion = 44;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -1283,7 +1283,7 @@
 		29B97313FDCFA39411CA2CEA /* Project object */ = {
 			isa = PBXProject;
 			buildConfigurationList = 4DF0C59A089918A300DD8943 /* Build configuration list for PBXProject "Transmission" */;
-			compatibilityVersion = "Xcode 2.4";
+			compatibilityVersion = "Xcode 3.0";
 			hasScannedForEncodings = 1;
 			knownRegions = (
 				English,
@@ -1804,7 +1804,7 @@
 				GCC_WARN_UNUSED_VARIABLE = NO;
 				OTHER_CFLAGS = "$(inherited)";
 				PREBINDING = NO;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
 			};
 			name = Development;
 		};
@@ -1855,7 +1855,7 @@
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
 				PREBINDING = NO;
-				SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
 			};
 			name = Release;
 		};