diff --git a/src/libcgo/arm.S b/src/libcgo/arm.S
new file mode 100644
index 0000000000..32d8629849
--- /dev/null
+++ b/src/libcgo/arm.S
@@ -0,0 +1 @@
+/* unimplemented */
diff --git a/src/pkg/runtime/linux/arm/sys.s b/src/pkg/runtime/linux/arm/sys.s
index 6824e29e85..7d3317209a 100644
--- a/src/pkg/runtime/linux/arm/sys.s
+++ b/src/pkg/runtime/linux/arm/sys.s
@@ -65,7 +65,7 @@ TEXT ·mmap(SB),7,$0
 	SWI	$0
 	RET
 
-TEXT ·mmap(SB),7,$0
+TEXT ·munmap(SB),7,$0
 	MOVW	0(FP), R0
 	MOVW	4(FP), R1
 	MOVW	$SYS_munmap, R7