diff --git a/stella/src/macosx/stella.xcodeproj/project.pbxproj b/stella/src/macosx/stella.xcodeproj/project.pbxproj
index 3ce2b7cdd..ed1a2b0d7 100644
--- a/stella/src/macosx/stella.xcodeproj/project.pbxproj
+++ b/stella/src/macosx/stella.xcodeproj/project.pbxproj
@@ -1745,6 +1745,7 @@
 					../../../../debugger,
 					./gui,
 					../gui,
+					./libpng,
 					.,
 				);
 				INFOPLIST_FILE = "Info-StellaOSX__Upgraded_.plist";
@@ -1807,6 +1808,7 @@
 					../../../../debugger,
 					./gui,
 					../gui,
+					./libpng,
 					.,
 				);
 				INFOPLIST_FILE = "Info-StellaOSX__Upgraded_.plist";