Index: uspace/Makefile.common
===================================================================
--- uspace/Makefile.common	(revision 048cd69e69ce8a5ca8bbf5d8a5b5451745dca93a)
+++ uspace/Makefile.common	(revision a15784655e146c5670ae00131f7aaef9823d465d)
@@ -203,7 +203,7 @@
 
 ifeq ($(CONFIG_OPTIMIZE_FOR_SIZE),y)
-	OPTIMIZATION = 0
-else
-	OPTIMIZATION = 0
+	OPTIMIZATION = s
+else
+	OPTIMIZATION = 3
 endif