diff --git a/src/utils.cpp b/src/utils.cpp
index 978e0a9..fcbe0d0 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -5,8 +5,8 @@
  * Written by Václav Kubernát <kubervac@fit.cvut.cz>
  *
 */
-#include <boost/algorithm/string/predicate.hpp>
 #include <sstream>
+#include "completion.hpp"
 #include "utils.hpp"
 
 std::string joinPaths(const std::string& prefix, const std::string& suffix)
@@ -104,15 +104,6 @@
     return fullNodeName(dataPathToSchemaPath(location), pair);
 }
 
-std::set<std::string> filterByPrefix(const std::set<std::string>& set, const std::string_view prefix)
-{
-    std::set<std::string> filtered;
-    std::copy_if(set.begin(), set.end(),
-            std::inserter(filtered, filtered.end()),
-            [prefix] (auto it) { return boost::starts_with(it, prefix); });
-    return filtered;
-}
-
 struct leafDataToStringVisitor : boost::static_visitor<std::string> {
     std::string operator()(const enum_& data) const
     {