--- a/src/gfxinit.cpp	Thu May 31 14:29:19 2007 +0000
+++ b/src/gfxinit.cpp	Thu May 31 15:15:00 2007 +0000
@@ -399,6 +399,9 @@
 	assert(load_index == SPR_TRAMWAY_BASE);
 	load_index += LoadGrfFile("tramtrkw.grf", load_index, i++);
 
+	assert(load_index == SPR_ONEWAY_BASE);
+	load_index += LoadGrfFile("oneway.grf", load_index, i++);
+
 	/* Initialize the unicode to sprite mapping table */
 	InitializeUnicodeGlyphMap();