diff --git a/src/industry_map.h b/src/industry_map.h
index 723b4c0107..158d0d92e4 100644
--- a/src/industry_map.h
+++ b/src/industry_map.h
@@ -218,7 +218,7 @@ static inline void SetIndustryConstructionCounter(TileIndex tile, byte value)
 static inline void ResetIndustryConstructionStage(TileIndex tile)
 {
 	assert(IsTileType(tile, MP_INDUSTRY));
-	SB(_m[tile].m1, 0, 2, 0);
+	SB(_m[tile].m1, 0, 4, 0);
 	SB(_m[tile].m1, 7, 1, 0);
 }