diff --git a/src/rail_cmd.cpp b/src/rail_cmd.cpp
--- a/src/rail_cmd.cpp
+++ b/src/rail_cmd.cpp
@@ -531,7 +531,7 @@ CommandCost CmdBuildSingleRail(DoCommand
 					/* Disallow breaking end-of-line of someone else
 					 * so trams can still reverse on this tile. */
 					if (Company::IsValidID(tram_owner) && HasExactlyOneBit(tram)) {
-						CommandCost ret = CheckOwnership(tram_owner);
+						ret = CheckOwnership(tram_owner);
 						if (ret.Failed()) return ret;
 					}
 
@@ -893,7 +893,7 @@ static CommandCost CmdRailTrackHelper(Do
 	bool had_success = false;
 	CommandCost last_error = CMD_ERROR;
 	for (;;) {
-		CommandCost ret = remove ? Command<CMD_REMOVE_SINGLE_RAIL>::Do(flags, tile, TrackdirToTrack(trackdir)) : Command<CMD_BUILD_SINGLE_RAIL>::Do(flags, tile, railtype, TrackdirToTrack(trackdir), auto_remove_signals);
+		ret = remove ? Command<CMD_REMOVE_SINGLE_RAIL>::Do(flags, tile, TrackdirToTrack(trackdir)) : Command<CMD_BUILD_SINGLE_RAIL>::Do(flags, tile, railtype, TrackdirToTrack(trackdir), auto_remove_signals);
 
 		if (ret.Failed()) {
 			last_error = ret;
@@ -1591,7 +1591,7 @@ CommandCost CmdConvertRail(DoCommandFlag
 		 * Tunnels and bridges have special check later */
 		if (tt != MP_TUNNELBRIDGE) {
 			if (!IsCompatibleRail(type, totype)) {
-				CommandCost ret = IsPlainRailTile(tile) ? EnsureNoTrainOnTrackBits(tile, GetTrackBits(tile)) : EnsureNoVehicleOnGround(tile);
+				ret = IsPlainRailTile(tile) ? EnsureNoTrainOnTrackBits(tile, GetTrackBits(tile)) : EnsureNoVehicleOnGround(tile);
 				if (ret.Failed()) {
 					error = ret;
 					continue;
@@ -1675,7 +1675,7 @@ CommandCost CmdConvertRail(DoCommandFlag
 
 				/* When not converting rail <-> el. rail, any vehicle cannot be in tunnel/bridge */
 				if (!IsCompatibleRail(GetRailType(tile), totype)) {
-					CommandCost ret = TunnelBridgeIsFree(tile, endtile);
+					ret = TunnelBridgeIsFree(tile, endtile);
 					if (ret.Failed()) {
 						error = ret;
 						continue;