diff --git a/PowerEditor/src/NppIO.cpp b/PowerEditor/src/NppIO.cpp
index 8fa42ca38..0147ad138 100644
--- a/PowerEditor/src/NppIO.cpp
+++ b/PowerEditor/src/NppIO.cpp
@@ -262,7 +262,11 @@ BufferID Notepad_plus::doOpen(const generic_string& fileName, bool isRecursive,
                 size_t pos = substring - fileName.c_str();
 
                 patterns.push_back(substring + 1);
-                generic_string dir(fileName, pos + 1);
+                generic_string dir(fileName.c_str(), pos + 1); // use char * to evoke:
+                                                               // string (const char* s, size_t n);
+                                                               // and avoid to call (if pass string) :
+                                                               // string (const string& str, size_t pos, size_t len = npos);
+
                 getMatchedFileNames(dir.c_str(), patterns, fileNames, isRecursive, false);
             }
             else