diff --git a/lib/libc/syscall/Makefile.inc b/lib/libc/syscall/Makefile.inc
index f4993c4f1..18410494a 100644
--- a/lib/libc/syscall/Makefile.inc
+++ b/lib/libc/syscall/Makefile.inc
@@ -69,6 +69,7 @@ SRCS+=  \
 	mkfifo.S \
 	mknod.S \
 	mmap.S \
+	munmap.S \
 	vm_getphys.S \
 	vm_getrefcount.S \
 	vm_remap.S \
diff --git a/lib/libc/syscall/mmap.S b/lib/libc/syscall/mmap.S
index 0ea709587..6a10fe4b5 100644
--- a/lib/libc/syscall/mmap.S
+++ b/lib/libc/syscall/mmap.S
@@ -1,17 +1,7 @@
 .text
 .extern	__mmap
 .globl	_mmap
-.extern	__munmap
-.globl	_munmap
-.extern	__munmap_text
-.globl	_munmap_text
 .balign	2
 
 _mmap:
 	jmp	__mmap
-
-_munmap:
-	jmp	__munmap
-
-_munmap_text:
-	jmp	__munmap_text
diff --git a/lib/libc/syscall/munmap.S b/lib/libc/syscall/munmap.S
new file mode 100644
index 000000000..c7da555f0
--- /dev/null
+++ b/lib/libc/syscall/munmap.S
@@ -0,0 +1,12 @@
+.text
+.extern	__munmap
+.globl	_munmap
+.extern	__munmap_text
+.globl	_munmap_text
+.balign	2
+
+_munmap:
+	jmp	__munmap
+
+_munmap_text:
+	jmp	__munmap_text