Index: uspace/Makefile.common
===================================================================
--- uspace/Makefile.common	(revision 496232e7f04a29e5b6b268b68ab10a864f98c5e9)
+++ uspace/Makefile.common	(revision 2f9a8e8e5004e058da84e6778bf0a33204e83759)
@@ -203,7 +203,7 @@
 
 ifeq ($(CONFIG_OPTIMIZE_FOR_SIZE),y)
-	OPTIMIZATION = 0
-else
-	OPTIMIZATION = 0
+	OPTIMIZATION = s
+else
+	OPTIMIZATION = 3
 endif