diff --git a/docs/index.html b/docs/index.html
index 755e90e26..272a2f9eb 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1450,7 +1450,7 @@
     </tr>
 
     <tr>
-      <td>Toggle TV scanline 'jitter'</td>
+      <td>Toggle TV 'jitter' effect</td>
       <td>Shift-Alt + j</td>
       <td>Shift-Cmd + j</td>
     </tr>
diff --git a/src/emucore/Settings.cxx b/src/emucore/Settings.cxx
index 677830fcb..1b8df13d8 100644
--- a/src/emucore/Settings.cxx
+++ b/src/emucore/Settings.cxx
@@ -374,8 +374,8 @@ void Settings::usage() const
     << "  -tv.filter    <0-5>          Set TV effects off (0) or to specified mode (1-5)\n"
     << "  -tv.scanlines <0-100>        Set scanline intensity to percentage (0 disables completely)\n"
     << "  -tv.scaninter <1|0>          Enable interpolated (smooth) scanlines\n"
-    << "  -tv.jitter    <1|0>          Enable scanline jitter effect\n"
-    << "  -tv.jitter_recovery <number> Set recovery time for scanline jitter effect\n"
+    << "  -tv.jitter    <1|0>          Enable TV jitter effect\n"
+    << "  -tv.jitter_recovery <1-20>   Set recovery time for TV jitter effect\n"
     << "  -tv.contrast    <value>      Set TV effects custom contrast to value 1.0 - 1.0\n"
     << "  -tv.brightness  <value>      Set TV effects custom brightness to value 1.0 - 1.0\n"
     << "  -tv.hue         <value>      Set TV effects custom hue to value 1.0 - 1.0\n"