diff --git a/sys/Makefile b/sys/Makefile
index c04f15db..d970ed58 100644
--- a/sys/Makefile
+++ b/sys/Makefile
@@ -4,4 +4,5 @@
 # Copyright 2018, 2020 Phoenix Systems
 #
 
-OBJS += $(addprefix $(PREFIX_O)sys/, events.o ioctl.o list.o mount.o rb.o resource.o select.o semaphore.o socket.o stat.o statvfs.o threads.o time.o times.o wait.o uio.o proto.o)
+OBJS += $(addprefix $(PREFIX_O)sys/, events.o ioctl.o list.o mount.o rb.o resource.o select.o \
+semaphore.o socket.o stat.o statvfs.o threads.o time.o times.o wait.o uio.o proto.o mman.o)
diff --git a/sys/mman.c b/sys/mman.c
new file mode 100644
index 00000000..f4210f6e
--- /dev/null
+++ b/sys/mman.c
@@ -0,0 +1,37 @@
+/*
+ * Phoenix-RTOS
+ *
+ * libphoenix
+ *
+ * mmap/munmap
+ *
+ * Copyright 2024 Phoenix Systems
+ * Author: Aleksander Kaminski
+ *
+ * This file is part of Phoenix-RTOS.
+ *
+ * %LICENSE%
+ */
+
+#include <stddef.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <errno.h>
+
+
+WRAP_ERRNO_DEF(int, munmap, (void *vadddr, size_t size), (vadddr, size))
+
+
+extern int sys_mmap(void **vaddr, size_t size, int prot, int flags, int fildes, off_t offs);
+
+
+void *mmap(void *vaddr, size_t size, int prot, int flags, int fildes, off_t offs)
+{
+	int err = sys_mmap(&vaddr, size, prot, flags, fildes, offs);
+	if (err < 0) {
+		vaddr = MAP_FAILED;
+		SET_ERRNO(err);
+	}
+
+	return vaddr;
+}