diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index 7c78a02816..26c29deb51 100755
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -232,6 +232,7 @@ echo === Leaving out required options ===
 echo
 
 run_qemu -drive driver=file
+run_qemu -drive driver=file,filename=
 run_qemu -drive driver=nbd
 run_qemu -drive driver=raw
 run_qemu -drive file.driver=file
diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out
index 3b7b040f72..4d3b1ff316 100644
--- a/tests/qemu-iotests/051.out
+++ b/tests/qemu-iotests/051.out
@@ -221,6 +221,9 @@ QEMU X.Y.Z monitor - type 'help' for more information
 Testing: -drive driver=file
 QEMU_PROG: -drive driver=file: The 'file' block driver requires a file name
 
+Testing: -drive driver=file,filename=
+QEMU_PROG: -drive driver=file,filename=: The 'file' block driver requires a file name
+
 Testing: -drive driver=nbd
 QEMU_PROG: -drive driver=nbd: NBD server address missing
 
diff --git a/tests/qemu-iotests/051.pc.out b/tests/qemu-iotests/051.pc.out
index 7f9a1212b8..76d7205460 100644
--- a/tests/qemu-iotests/051.pc.out
+++ b/tests/qemu-iotests/051.pc.out
@@ -319,6 +319,9 @@ QEMU X.Y.Z monitor - type 'help' for more information
 Testing: -drive driver=file
 QEMU_PROG: -drive driver=file: The 'file' block driver requires a file name
 
+Testing: -drive driver=file,filename=
+QEMU_PROG: -drive driver=file,filename=: The 'file' block driver requires a file name
+
 Testing: -drive driver=nbd
 QEMU_PROG: -drive driver=nbd: NBD server address missing