Index: uspace/lib/c/Makefile
===================================================================
--- uspace/lib/c/Makefile	(revision b1c57a828cb73794beb6a309f5ec0199ca75ecc2)
+++ uspace/lib/c/Makefile	(revision 8d1f92fdcde7756ebe1ff96f42afb8da5411fac9)
@@ -171,5 +171,6 @@
 TEST_SOURCES = \
 	test/main.c \
-	test/sprintf.c
+	test/sprintf.c \
+	test/str.c
 
 include $(USPACE_PREFIX)/Makefile.common