diff --git a/Source/cmFindPackageCommand.cxx b/Source/cmFindPackageCommand.cxx
index c988b59701..92b1e80b8a 100644
--- a/Source/cmFindPackageCommand.cxx
+++ b/Source/cmFindPackageCommand.cxx
@@ -1984,7 +1984,7 @@ cmFileListGeneratorBase* cmFileListGeneratorBase::SetNext(
 bool cmFileListGeneratorBase::Consider(std::string const& fullPath,
                                        cmFileList& listing)
 {
-  if (!cmSystemTools::FileIsDirectory(fullPath)) {
+  if (!fullPath.empty() && !cmSystemTools::FileIsDirectory(fullPath)) {
     return false;
   }
   if (this->Next) {