diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 1f35f56d57..0bdcd3e5ee 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -1999,7 +1999,7 @@ static ChangeInfoResult StationChangeInfo(uint stid, int numinfo, int prop, Byte
 
 			case 0x0A: { // Copy sprite layout
 				byte srcid = buf->ReadByte();
-				const StationSpec *srcstatspec = _cur.grffile->stations[srcid];
+				const StationSpec *srcstatspec = srcid >= NUM_STATIONS_PER_GRF ? nullptr : _cur.grffile->stations[srcid];
 
 				if (srcstatspec == nullptr) {
 					grfmsg(1, "StationChangeInfo: Station %u is not defined, cannot copy sprite layout to %u.", srcid, stid + i);
@@ -2053,7 +2053,7 @@ static ChangeInfoResult StationChangeInfo(uint stid, int numinfo, int prop, Byte
 
 			case 0x0F: { // Copy custom layout
 				byte srcid = buf->ReadByte();
-				const StationSpec *srcstatspec = _cur.grffile->stations[srcid];
+				const StationSpec *srcstatspec = srcid >= NUM_STATIONS_PER_GRF ? nullptr : _cur.grffile->stations[srcid];
 
 				if (srcstatspec == nullptr) {
 					grfmsg(1, "StationChangeInfo: Station %u is not defined, cannot copy tile layout to %u.", srcid, stid + i);