diff --git a/build/BuildEnv.shade b/build/BuildEnv.shade
index ac53a85bd6..8f5d2d30d0 100644
--- a/build/BuildEnv.shade
+++ b/build/BuildEnv.shade
@@ -10,4 +10,11 @@ functions
             return "t" + DateTime.UtcNow.ToString("yyMMddHHmmss");
         }
     }
+    bool IsTeamCity
+    {
+        get
+        {
+            return Environment.GetEnvironmentVariable("TEAMCITY_PROJECT_NAME") != null;
+        }
+    }
   }