Index: uspace/lib/c/Makefile
===================================================================
--- uspace/lib/c/Makefile	(revision b1c57a828cb73794beb6a309f5ec0199ca75ecc2)
+++ uspace/lib/c/Makefile	(revision a18a8b98aaf4c1d3de4b05b95565daf1aa01a1c8)
@@ -171,5 +171,6 @@
 TEST_SOURCES = \
 	test/main.c \
-	test/sprintf.c
+	test/sprintf.c \
+	test/str.c
 
 include $(USPACE_PREFIX)/Makefile.common