1 files changed, 2 insertions, 3 deletions
diff --git a/src/string_piece_util.h b/src/string_piece_util.h
index 2e40b9f..28470f1 100644
--- a/src/string_piece_util.h
+++ b/src/string_piece_util.h
@@ -19,11 +19,10 @@
 #include <vector>
 
 #include "string_piece.h"
-using namespace std;
 
-vector<StringPiece> SplitStringPiece(StringPiece input, char sep);
+std::vector<StringPiece> SplitStringPiece(StringPiece input, char sep);
 
-string JoinStringPiece(const vector<StringPiece>& list, char sep);
+std::string JoinStringPiece(const std::vector<StringPiece>& list, char sep);
 
 inline char ToLowerASCII(char c) {
   return (c >= 'A' && c <= 'Z') ? (c + ('a' - 'A')) : c;