diff --git a/blockjob.c b/blockjob.c
index c6e20e2fcd..5d63b1e89d 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -261,7 +261,8 @@ void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp)
         return;
     }
     if (speed < 0) {
-        error_setg(errp, QERR_INVALID_PARAMETER, "speed");
+        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "speed",
+                   "a non-negative value");
         return;
     }
 
diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
index f3766f2a81..be35bde06f 100755
--- a/tests/qemu-iotests/030
+++ b/tests/qemu-iotests/030
@@ -943,7 +943,7 @@ class TestSetSpeed(iotests.QMPTestCase):
         self.assert_no_active_block_jobs()
 
         result = self.vm.qmp('block-stream', device='drive0', speed=-1)
-        self.assert_qmp(result, 'error/desc', "Invalid parameter 'speed'")
+        self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value")
 
         self.assert_no_active_block_jobs()
 
@@ -952,7 +952,7 @@ class TestSetSpeed(iotests.QMPTestCase):
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
-        self.assert_qmp(result, 'error/desc', "Invalid parameter 'speed'")
+        self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value")
 
         self.cancel_and_wait(resume=True)