diff --git a/Source/Common/path.cpp b/Source/Common/path.cpp
index 578db233b..94e1c41d1 100644
--- a/Source/Common/path.cpp
+++ b/Source/Common/path.cpp
@@ -1022,7 +1022,7 @@ void CPath::cleanPathString(stdstr& rDirectory) const
 	pos = rDirectory.find( DIR_DOUBLEDELIM );
 	while ( pos != std::string::npos )
 	{
-		rDirectory.replace( pos, 1, &DIRECTORY_DELIMITER );
+		rDirectory.replace( pos, 2, &DIRECTORY_DELIMITER );
 		pos = rDirectory.find( DIR_DOUBLEDELIM, pos + 1 );
 	}
 	if (AppendEnd)