diff --git a/Source/Units/IronBuilding.cpp b/Source/Units/IronBuilding.cpp
index ba4aaa5b..ce9836cc 100644
--- a/Source/Units/IronBuilding.cpp
+++ b/Source/Units/IronBuilding.cpp
@@ -695,7 +695,7 @@ int terBuildingPowered::repairRequest() const
 //-------------------------------------------
 
 terBuildingEnvironment::terBuildingEnvironment(const UnitTemplate& data) 
-: terBuildingPowered(data)
+: terBuilding(data)
 {
 }
 
diff --git a/Source/Units/IronBuilding.h b/Source/Units/IronBuilding.h
index b741286c..36bda537 100644
--- a/Source/Units/IronBuilding.h
+++ b/Source/Units/IronBuilding.h
@@ -230,12 +230,13 @@ class terBuildingUninstall : public terUnitBase
 	DurationTimer lifeTimer_;
 };
 
-class terBuildingEnvironment : public terBuildingPowered
+class terBuildingEnvironment : public terBuilding
 {
 public:
 	terBuildingEnvironment(const UnitTemplate& data);
 
 	ChainID chainRequest() const { return CHAIN_NONE; }
+    int repairRequest() const { return 0; }
 };
 
 #endif //__IRONBUILDING_H__
\ No newline at end of file