Index: uspace/lib/cpp/Makefile
===================================================================
--- uspace/lib/cpp/Makefile	(revision eb69df4b5886e12c6fc1e84b62185315628f5cc2)
+++ uspace/lib/cpp/Makefile	(revision 7d0f2eb00447d074f8e45520646afaee44512f87)
@@ -42,4 +42,5 @@
 	src/iostream.cpp \
 	src/locale.cpp \
+	src/mutex.cpp \
 	src/new.cpp \
 	src/string.cpp \