diff --git a/fipsalgt.cpp b/fipsalgt.cpp
index ccba9940..db0fc538 100644
--- a/fipsalgt.cpp
+++ b/fipsalgt.cpp
@@ -15,7 +15,6 @@
 #include "oids.h"
 
 USING_NAMESPACE(CryptoPP)
-USING_NAMESPACE(std)
 
 class LineBreakParser : public AutoSignaling<Bufferless<Filter> >
 {