diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
index 789b851a..4978fb35 100644
--- a/PVE/API2/Qemu.pm
+++ b/PVE/API2/Qemu.pm
@@ -342,7 +342,7 @@ __PACKAGE__->register_method({
 
 	my $createfn = sub {
 
-	    # second test (after locking test is accurate)
+	    # test after locking
 	    die "unable to create vm $vmid: config file already exists\n"
 		if -f $filename;
 
@@ -389,7 +389,7 @@ __PACKAGE__->register_method({
 	    return $rpcenv->fork_worker('qmcreate', $vmid, $authuser, $realcmd);
 	};
 
-	return PVE::QemuServer::lock_config($vmid, $archive ? $restorefn : $createfn);
+	return PVE::QemuServer::lock_config_full($vmid, 1, $archive ? $restorefn : $createfn);
     }});
 
 __PACKAGE__->register_method({
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 314c9382..d21069c3 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -1332,18 +1332,24 @@ sub check_type {
     }
 }
 
-sub lock_config {
-    my ($vmid, $code, @param) = @_;
+sub lock_config_full {
+    my ($vmid, $timeout, $code, @param) = @_;
 
     my $filename = config_file_lock($vmid);
 
-    my $res = lock_file($filename, 10, $code, @param);
+    my $res = lock_file($filename, $timeout, $code, @param);
 
     die $@ if $@;
 
     return $res;
 }
 
+sub lock_config {
+    my ($vmid, $code, @param) = @_;
+
+    return lock_config_full($vmid, 10, $code, @param);
+}
+
 sub cfs_config_path {
     my ($vmid, $node) = @_;