--- a/src/vehicle_gui.cpp	Thu Jul 17 20:13:01 2008 +0000
+++ b/src/vehicle_gui.cpp	Thu Jul 17 21:15:57 2008 +0000
@@ -493,6 +493,7 @@
 	/* Make sure we detect any buffer overflow */
 	assert(b < endof(string));
 
+	SetDParamStr(0, string);
 	return DrawStringMultiLine(x, y, STR_JUST_RAW_STRING, w);
 }