diff --git a/hw/xwin/InitOutput.c b/hw/xwin/InitOutput.c
index 57e514faf..119012405 100644
--- a/hw/xwin/InitOutput.c
+++ b/hw/xwin/InitOutput.c
@@ -745,10 +745,6 @@ winUseMsg(void)
 
     ErrorF("-ignoreinput\n" "\tIgnore keyboard and mouse input.\n");
 
-#ifdef XWIN_MULTIWINDOWEXTWM
-    ErrorF("-internalwm\n" "\tRun the internal window manager.\n");
-#endif
-
 #ifdef XWIN_XF86CONFIG
     ErrorF("-keyboard\n"
            "\tSpecify a keyboard device from the configuration file.\n");
diff --git a/hw/xwin/man/XWin.man b/hw/xwin/man/XWin.man
index 50fdba2e0..7ffdd6c23 100644
--- a/hw/xwin/man/XWin.man
+++ b/hw/xwin/man/XWin.man
@@ -346,9 +346,6 @@ Color map manipulation is not supported, so the PseudoColor visual will
 not have the correct colors.
 This option is intended to allow applications which only work with a depth 8
 visual to operate in TrueColor modes.
-.TP 8
-.B \-internalwm
-Run the internal window manager.
 
 .SH LOG FILE
 As it runs \fIXWin\fP writes messages indicating the most relevant events
diff --git a/hw/xwin/winprocarg.c b/hw/xwin/winprocarg.c
index 2bf656064..bf70cf1ed 100644
--- a/hw/xwin/winprocarg.c
+++ b/hw/xwin/winprocarg.c
@@ -577,11 +577,8 @@ ddxProcessArgument(int argc, char *argv[], int i)
      * Look for the '-internalwm' argument
      */
     if (IS_OPTION("-internalwm")) {
-        if (!screenInfoPtr->fMultiMonitorOverride)
-            screenInfoPtr->fMultipleMonitors = TRUE;
-        screenInfoPtr->fMWExtWM = TRUE;
-        screenInfoPtr->fInternalWM = TRUE;
-
+        ErrorF("Ignoring obsolete -internalwm option\n");
+        /* Ignored, but we still accept the arg for backwards compatibility */
         /* Indicate that we have processed this argument */
         return 1;
     }