diff --git a/Source/cmFortranParserImpl.cxx b/Source/cmFortranParserImpl.cxx
index c175e6208..b3b2f16fe 100644
--- a/Source/cmFortranParserImpl.cxx
+++ b/Source/cmFortranParserImpl.cxx
@@ -229,7 +229,7 @@ void cmFortranParser_RuleLineDirective(cmFortranParser* parser,
   cmSystemTools::ConvertToUnixSlashes(included);
 
   // Save the named file as included in the source.
-  if (cmSystemTools::FileExists(included))
+  if (cmSystemTools::FileExists(included, true))
     {
     parser->Info.Includes.insert(included);
     }