diff --git a/external/untwine/untwine/Common.cpp b/external/untwine/untwine/Common.cpp
index e4b2d405780e..588028bb0325 100644
--- a/external/untwine/untwine/Common.cpp
+++ b/external/untwine/untwine/Common.cpp
@@ -136,7 +136,7 @@ std::vector<std::string> directoryList(const std::string& dir)
 #ifndef __MINGW32__
             files.push_back(untwine::fromNative(it->path()));
 #else
-            files.push_back(untwine::fromNative(it->path().string));
+            files.push_back(untwine::fromNative(it->path().string());
 #endif
             it++;
         }