diff --git a/tests/qemu-iotests/177 b/tests/qemu-iotests/177
index 7bf8e1d..f0c1155 100755
--- a/tests/qemu-iotests/177
+++ b/tests/qemu-iotests/177
@@ -85,7 +85,7 @@
 echo
 echo "== verify image content =="
 
-function verify_io()
+verify_io()
 {
     if ($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" |
 	    grep "compat: 0.10" > /dev/null); then