diff --git a/src/rpcclient.cpp b/src/rpcclient.cpp
index 1f780bcb0..f0c6611ae 100644
--- a/src/rpcclient.cpp
+++ b/src/rpcclient.cpp
@@ -11,7 +11,6 @@
 #include <set>
 #include <stdint.h>
 
-#include <boost/algorithm/string/case_conv.hpp> // for to_lower()
 #include "univalue/univalue.h"
 
 using namespace std;