diff --git a/src/PVE/CLIHandler.pm b/src/PVE/CLIHandler.pm
index 9a2f841..b684ca8 100644
--- a/src/PVE/CLIHandler.pm
+++ b/src/PVE/CLIHandler.pm
@@ -98,9 +98,11 @@ __PACKAGE__->register_method ({
 	raise_param_exc({ cmd => "no such command '$cmd'"}) if !$class;
 
 	my $pwcallback = $cli_handler_class->can('read_password');
+	my $stringfilemap = $cli_handler_class->can('string_param_file_mapping');
 
 	my $str = $class->usage_str($name, "$exename $cmd", $arg_param, $uri_param,
-				    $verbose ? 'full' : 'short', $pwcallback);
+				    $verbose ? 'full' : 'short', $pwcallback,
+				    $stringfilemap);
 	if ($verbose) {
 	    print "$str\n";
 	} else {
@@ -117,10 +119,12 @@ sub print_simple_asciidoc_synopsys {
     die "not initialized" if !$cli_handler_class;
 
     my $pwcallback = $cli_handler_class->can('read_password');
+    my $stringfilemap = $cli_handler_class->can('string_param_file_mapping');
 
     my $synopsis = "*${name}* `help`\n\n";
 
-    $synopsis .= $class->usage_str($name, $name, $arg_param, $uri_param, 'asciidoc', $pwcallback);
+    $synopsis .= $class->usage_str($name, $name, $arg_param, $uri_param,
+				   'asciidoc', $pwcallback, $stringfilemap);
 
     return $synopsis;
 }
@@ -130,6 +134,7 @@ sub print_asciidoc_synopsys {
     die "not initialized" if !($cmddef && $exename && $cli_handler_class);
 
     my $pwcallback = $cli_handler_class->can('read_password');
+    my $stringfilemap = $cli_handler_class->can('string_param_file_mapping');
 
     my $synopsis = "";
 
@@ -139,7 +144,8 @@ sub print_asciidoc_synopsys {
     foreach my $cmd (sort keys %$cmddef) {
 	my ($class, $name, $arg_param, $uri_param) = @{$cmddef->{$cmd}};
 	my $str = $class->usage_str($name, "$exename $cmd", $arg_param,
-				    $uri_param, 'asciidoc', $pwcallback);
+				    $uri_param, 'asciidoc', $pwcallback,
+				    $stringfilemap);
 	$synopsis .= "\n" if $oldclass && $oldclass ne $class;
 
 	$synopsis .= "$str\n\n";
@@ -157,9 +163,10 @@ sub print_simple_pod_manpage {
     die "not initialized" if !$cli_handler_class;
 
     my $pwcallback = $cli_handler_class->can('read_password');
+    my $stringfilemap = $cli_handler_class->can('string_param_file_mapping');
 
     my $synopsis = " $name help\n\n";
-    my $str = $class->usage_str($name, $name, $arg_param, $uri_param, 'long', $pwcallback);
+    my $str = $class->usage_str($name, $name, $arg_param, $uri_param, 'long', $pwcallback, $stringfilemap);
     $str =~ s/^USAGE://;
     $str =~ s/\n/\n /g;
     $synopsis .= $str;
@@ -176,6 +183,7 @@ sub print_pod_manpage {
     die "no pod file specified" if !$podfn;
 
     my $pwcallback = $cli_handler_class->can('read_password');
+    my $stringfilemap = $cli_handler_class->can('string_param_file_mapping');
 
     my $synopsis = "";
     
@@ -186,7 +194,8 @@ sub print_pod_manpage {
     foreach my $cmd (sorted_commands()) {
 	my ($class, $name, $arg_param, $uri_param) = @{$cmddef->{$cmd}};
 	my $str = $class->usage_str($name, "$exename $cmd", $arg_param,
-				    $uri_param, $style, $pwcallback);
+				    $uri_param, $style, $pwcallback,
+				    $stringfilemap);
 	$str =~ s/^USAGE: //;
 
 	$synopsis .= "\n" if $oldclass && $oldclass ne $class;
@@ -207,13 +216,14 @@ sub print_usage_verbose {
     die "not initialized" if !($cmddef && $exename && $cli_handler_class);
 
     my $pwcallback = $cli_handler_class->can('read_password');
+    my $stringfilemap = $cli_handler_class->can('string_param_file_mapping');
 
     print "USAGE: $exename <COMMAND> [ARGS] [OPTIONS]\n\n";
 
     foreach my $cmd (sort keys %$cmddef) {
 	my ($class, $name, $arg_param, $uri_param) = @{$cmddef->{$cmd}};
 	my $str = $class->usage_str($name, "$exename $cmd", $arg_param, $uri_param,
-				    'full', $pwcallback);
+				    'full', $pwcallback, $stringfilemap);
 	print "$str\n\n";
     }
 }
@@ -228,6 +238,7 @@ sub print_usage_short {
     die "not initialized" if !($cmddef && $exename && $cli_handler_class);
 
     my $pwcallback = $cli_handler_class->can('read_password');
+    my $stringfilemap = $cli_handler_class->can('string_param_file_mapping');
 
     print $fd "ERROR: $msg\n" if $msg;
     print $fd "USAGE: $exename <COMMAND> [ARGS] [OPTIONS]\n";
@@ -235,7 +246,7 @@ sub print_usage_short {
     my $oldclass;
     foreach my $cmd (sorted_commands()) {
 	my ($class, $name, $arg_param, $uri_param) = @{$cmddef->{$cmd}};
-	my $str = $class->usage_str($name, "$exename $cmd", $arg_param, $uri_param, 'short', $pwcallback);
+	my $str = $class->usage_str($name, "$exename $cmd", $arg_param, $uri_param, 'short', $pwcallback, $stringfilemap);
 	print $fd "\n" if $oldclass && $oldclass ne $class;
 	print $fd "       $str";
 	$oldclass = $class;
@@ -500,7 +511,7 @@ my $handle_simple_cmd = sub {
     if (scalar(@$args) >= 1) {
 	if ($args->[0] eq 'help') {
 	    my $str = "USAGE: $name help\n";
-	    $str .= $class->usage_str($name, $name, $arg_param, $uri_param, 'long', $pwcallback);
+	    $str .= $class->usage_str($name, $name, $arg_param, $uri_param, 'long', $pwcallback, $stringfilemap);
 	    print STDERR "$str\n\n";
 	    return;
 	} elsif ($args->[0] eq 'bashcomplete') {
diff --git a/src/PVE/RESTHandler.pm b/src/PVE/RESTHandler.pm
index 9e0980e..ad76b01 100644
--- a/src/PVE/RESTHandler.pm
+++ b/src/PVE/RESTHandler.pm
@@ -410,7 +410,7 @@ sub handle {
 # $format: 'asciidoc', 'pod' or 'text'
 # $style: 'config', 'arg' or 'fixed'
 my $get_property_description = sub {
-    my ($name, $style, $phash, $format, $hidepw) = @_;
+    my ($name, $style, $phash, $format, $hidepw, $fileparams) = @_;
 
     my $res = '';
 
@@ -426,6 +426,15 @@ my $get_property_description = sub {
 	$type = '';
     }
 
+    if ($fileparams && $type eq 'string') {
+	foreach my $elem (@$fileparams) {
+	    if ($name eq $elem) {
+		$type = 'filepath';
+		last;
+	    }
+	}
+    }
+
     if ($format eq 'asciidoc') {
 
 	if ($style eq 'config') {
@@ -508,8 +517,9 @@ my $get_property_description = sub {
 #   'full'     ... also include description
 #   'asciidoc' ... generate asciidoc for man pages (like 'full')
 # $hidepw      ... hide password option (use this if you provide a read passwork callback)
+# $stringfilemap ... mapping for string parameters to file path parameters
 sub usage_str {
-    my ($self, $name, $prefix, $arg_param, $fixed_param, $format, $hidepw) = @_;
+    my ($self, $name, $prefix, $arg_param, $fixed_param, $format, $hidepw, $stringfilemap) = @_;
 
     $format = 'long' if !$format;
 
@@ -564,7 +574,8 @@ sub usage_str {
 	    $base = "${name}[n]";
 	}
 
-	$opts .= &$get_property_description($base, 'arg', $prop->{$k}, 'text', $hidepw);
+	$opts .= &$get_property_description($base, 'arg', $prop->{$k}, 'text',
+					    $hidepw, &$stringfilemap($name));
 
 	if (!$prop->{$k}->{optional}) {
 	    $args .= " " if $args;
@@ -661,7 +672,7 @@ sub cli_handler {
 
 	die $err if !$ec || $ec ne "PVE::Exception" || !$err->is_param_exc();
 	
-	$err->{usage} = $self->usage_str($name, $prefix, $arg_param, $fixed_param, 'short', $pwcallback);
+	$err->{usage} = $self->usage_str($name, $prefix, $arg_param, $fixed_param, 'short', $pwcallback, $stringfilemap);
 
 	die $err;
     }