diff --git a/src/table/build_industry.h b/src/table/build_industry.h
--- a/src/table/build_industry.h
+++ b/src/table/build_industry.h
@@ -1098,7 +1098,7 @@ static const uint8 _farm_sounds[] = { SN
 /** Array with... hem... a sound of toyland */
 static const uint8 _plastic_mine_sounds[] = { SND_33_PLASTIC_MINE };
 
-enum {
+enum IndustryTypes {
 	IT_COAL_MINE           =   0,
 	IT_POWER_STATION       =   1,
 	IT_SAWMILL             =   2,