diff --git a/Source/cmCacheManager.cxx b/Source/cmCacheManager.cxx
index a47bb220d5..91d0ddfad7 100644
--- a/Source/cmCacheManager.cxx
+++ b/Source/cmCacheManager.cxx
@@ -743,6 +743,11 @@ void cmCacheManager::CacheIterator::SetProperty(const char* p, const char* v)
   ent->m_Properties[p] = v;
 }
 
+bool cmCacheManager::CacheIterator::GetValueAsBool() const 
+{ 
+  return cmSystemTools::IsOn(this->GetEntry().m_Value.c_str()); 
+}
+
 bool cmCacheManager::CacheIterator::GetPropertyAsBool(const char* property) const
 {
   // make sure it is not at the end
diff --git a/Source/cmCacheManager.h b/Source/cmCacheManager.h
index 8ad7d44f3f..700c16e6d4 100644
--- a/Source/cmCacheManager.h
+++ b/Source/cmCacheManager.h
@@ -60,6 +60,7 @@ public:
     void SetProperty(const char* property, const char* value);
     void SetProperty(const char* property, bool value);
     const char* GetValue() const { return this->GetEntry().m_Value.c_str(); }
+    bool GetValueAsBool() const;
     void SetValue(const char*);
     CacheEntryType GetType() const { return this->GetEntry().m_Type; }
     bool Initialized() { return this->GetEntry().m_Initialized; }