diff --git a/build/Xcode/epanet/epanet.xcodeproj/project.pbxproj b/build/Xcode/epanet/epanet.xcodeproj/project.pbxproj
index 59a4a81..bb0c2b8 100644
--- a/build/Xcode/epanet/epanet.xcodeproj/project.pbxproj
+++ b/build/Xcode/epanet/epanet.xcodeproj/project.pbxproj
@@ -334,7 +334,7 @@
 				HEADER_SEARCH_PATHS = macinclude;
 				ONLY_ACTIVE_ARCH = YES;
 				PREBINDING = NO;
-				SDKROOT = macosx10.6;
+				SDKROOT = "";
 			};
 			name = Debug;
 		};
@@ -348,7 +348,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = macinclude;
 				PREBINDING = NO;
-				SDKROOT = macosx10.6;
+				SDKROOT = "";
 			};
 			name = Release;
 		};