1 files changed, 1 insertions, 1 deletions
diff --git a/phrase-extract/extract-mixed-syntax/InputFileStream.h b/phrase-extract/extract-mixed-syntax/InputFileStream.h
index e2a31bc82..5de416237 100644
--- a/phrase-extract/extract-mixed-syntax/InputFileStream.h
+++ b/phrase-extract/extract-mixed-syntax/InputFileStream.h
@@ -37,7 +37,7 @@ protected:
   std::streambuf *m_streambuf;
 public:
 
-  InputFileStream(const std::string &filePath);
+  explicit InputFileStream(const std::string &filePath);
   ~InputFileStream();
 
   void Close();