Index: uspace/Makefile.common
===================================================================
--- uspace/Makefile.common	(revision 75751db6c5c6834a6695072a6087289dd2c538f6)
+++ uspace/Makefile.common	(revision c53b58e933d3da92e0e4a3461e7e13f4a3d81fb8)
@@ -195,7 +195,7 @@
 
 ifeq ($(CONFIG_OPTIMIZE_FOR_SIZE),y)
-	OPTIMIZATION = 0
-else
-	OPTIMIZATION = 0
+	OPTIMIZATION = s
+else
+	OPTIMIZATION = 3
 endif