diff --git a/SheepShaver/src/MacOSX/SheepShaver_Xcode8.xcodeproj/project.pbxproj b/SheepShaver/src/MacOSX/SheepShaver_Xcode8.xcodeproj/project.pbxproj
index bdde7b99..44bdb27d 100644
--- a/SheepShaver/src/MacOSX/SheepShaver_Xcode8.xcodeproj/project.pbxproj
+++ b/SheepShaver/src/MacOSX/SheepShaver_Xcode8.xcodeproj/project.pbxproj
@@ -489,6 +489,7 @@
 			);
 			name = Sources;
 			sourceTree = "<group>";
+			usesTabs = 1;
 		};
 		0856CD7E14A99EEF000B1711 /* dummy */ = {
 			isa = PBXGroup;