1 files changed, 4 insertions, 0 deletions
diff --git a/Source/cmCacheManager.cxx b/Source/cmCacheManager.cxx
index 864df8e..ed09545 100644
--- a/Source/cmCacheManager.cxx
+++ b/Source/cmCacheManager.cxx
@@ -750,6 +750,10 @@ void cmCacheManager::AddCacheEntry(const char* key,
     }
   e.SetProperty("HELPSTRING", helpString? helpString :
                 "(This variable does not exist and should not be used)");
+  if (this->Cache[key].Value == e.Value)
+    {
+    this->CMakeInstance->UnwatchUnusedCli(key);
+    }
   this->Cache[key] = e;
 }