Index: uspace/srv/fs/ext4fs/Makefile
===================================================================
--- uspace/srv/fs/ext4fs/Makefile	(revision 6c501f8ff98956b3a251fb0b81b404ae0ecf44a1)
+++ uspace/srv/fs/ext4fs/Makefile	(revision b3d7277fff81fe14acf16f7b50e657379eab157a)
@@ -28,6 +28,6 @@
 
 USPACE_PREFIX = ../../..
-LIBS = $(LIBBLOCK_PREFIX)/libblock.a $(LIBFS_PREFIX)/libfs.a $(LIBEXT4_PREFIX)/libext4.a
-EXTRA_CFLAGS += -I$(LIBBLOCK_PREFIX) -I$(LIBFS_PREFIX) -I$(LIBEXT4_PREFIX)
+LIBS = $(LIBBLOCK_PREFIX)/libblock.a $(LIBFS_PREFIX)/libfs.a $(LIBEXT4_PREFIX)/libext4.a $(LIBPOSIX_PREFIX)/libposix.a 
+EXTRA_CFLAGS += -I$(LIBBLOCK_PREFIX) -I$(LIBFS_PREFIX) -I$(LIBEXT4_PREFIX) -I$(LIBPOSIX_PREFIX)
 BINARY = ext4fs