diff --git a/doc/dbus-test-tool.1.xml.in b/doc/dbus-test-tool.1.xml.in
index 091dee14..5b7c43ed 100644
--- a/doc/dbus-test-tool.1.xml.in
+++ b/doc/dbus-test-tool.1.xml.in
@@ -45,7 +45,7 @@
         <arg choice="plain">--system</arg>
       </group>
       <arg choice="opt">--name=<replaceable>NAME</replaceable></arg>
-      <arg choice="opt">--sleep=<replaceable>MS</replaceable></arg>
+      <arg choice="opt">--sleep-ms=<replaceable>MS</replaceable></arg>
     </cmdsynopsis>
 
     <cmdsynopsis>
@@ -161,7 +161,7 @@
         </varlistentry>
 
         <varlistentry>
-          <term><option>--sleep=</option><replaceable>MS</replaceable></term>
+          <term><option>--sleep-ms=</option><replaceable>MS</replaceable></term>
           <listitem>
             <para>Block for <replaceable>MS</replaceable> milliseconds
               before replying to a method call.</para>
diff --git a/tools/dbus-echo.c b/tools/dbus-echo.c
index 0e7de1bd..738b1cb3 100644
--- a/tools/dbus-echo.c
+++ b/tools/dbus-echo.c
@@ -52,7 +52,7 @@ usage_echo (int exit_with)
            "\n"
            "    --name=NAME   claim this well-known name first\n"
            "\n"
-           "    --sleep=N     sleep N milliseconds before sending each reply\n"
+           "    --sleep-ms=N  sleep N milliseconds before sending each reply\n"
            "\n"
            "    --session     use the session bus (default)\n"
            "    --system      use the system bus\n"