c3-lang/libffi

diff --git a/libffi.xcodeproj/project.pbxproj b/libffi.xcodeproj/project.pbxproj
index 13a947d..87f8285 100644
--- a/libffi.xcodeproj/project.pbxproj
+++ b/libffi.xcodeproj/project.pbxproj
@@ -476,6 +476,7 @@
 				PRODUCT_NAME = ffi;
 				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
+				VALID_ARCHS = "arm64 armv7 armv7s i386 x86_64";
 			};
 			name = Debug;
 		};
@@ -509,6 +510,7 @@
 				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
 				VALIDATE_PRODUCT = YES;
+				VALID_ARCHS = "arm64 armv7 armv7s i386 x86_64";
 			};
 			name = Release;
 		};