diff --git a/stella/src/macosx/stella.pbproj/project.pbxproj b/stella/src/macosx/stella.pbproj/project.pbxproj
index d7362c28c..a081219c9 100755
--- a/stella/src/macosx/stella.pbproj/project.pbxproj
+++ b/stella/src/macosx/stella.pbproj/project.pbxproj
@@ -346,11 +346,12 @@
 				2D26484006795BCC0075A98A,
 			);
 			buildSettings = {
+				DEBUGGING_SYMBOLS = NO;
 				FRAMEWORK_SEARCH_PATHS = "\"$(HOME)/Library/Frameworks\" .";
 				HEADER_SEARCH_PATHS = "./SDL.framework/Headers ../emucore ../emucore/m6502/src/bspf/src ../emucore/m6502/src ../ui/sound ../common .";
 				INSTALL_PATH = "$(HOME)/Applications";
 				LIBRARY_SEARCH_PATHS = .;
-				OPTIMIZATION_CFLAGS = "-O0";
+				OPTIMIZATION_CFLAGS = "-O3";
 				OTHER_CFLAGS = "-DMAC_OSX  -DJOYSTICK_SUPPORT -DDISPLAY_OPENGL -DTEXTURES_ARE_LOST -DDEVELOPER_SUPPORT -DHAVE_GETTIMEOFDAY -DSNAPSHOT_SUPPORT -DBSPF_MAC_OSX";
 				OTHER_LDFLAGS = "-framework SDL -lz -lpng";
 				PRODUCT_NAME = StellaOSX;
@@ -392,7 +393,7 @@
 	<key>CFBundleExecutable</key>
 	<string>StellaOSX</string>
 	<key>CFBundleGetInfoString</key>
-	<string>1.4.2</string>
+	<string>1.4.2a</string>
 	<key>CFBundleHelpBookFolder</key>
 	<string>docs</string>
 	<key>CFBundleHelpBookName</key>
@@ -408,7 +409,7 @@
 	<key>CFBundleSignature</key>
 	<string>StLa</string>
 	<key>CFBundleVersion</key>
-	<string>1.4.2</string>
+	<string>1.4.2a</string>
 	<key>NSMainNibFile</key>
 	<string>SDLMain.nib</string>
 	<key>NSPrincipalClass</key>