diff --git a/Common/Options.cpp b/Common/Options.cpp
index 6e12f5ce68a7e85634cf38372b5f2f6550717048..b26823f52f0bb4c08c5eaccb96c127e30ae27e38 100644
--- a/Common/Options.cpp
+++ b/Common/Options.cpp
@@ -52,7 +52,6 @@
 #endif
 
 // General routines for string options
-using namespace std; 
 
 bool StringOption(int action, const char *category, int num, 
                   const char *name, std::string &val)