diff --git a/src/insert_completer.cc b/src/insert_completer.cc
index 9d9bc7cd..45f9681f 100644
--- a/src/insert_completer.cc
+++ b/src/insert_completer.cc
@@ -295,8 +295,8 @@ void InsertCompleter::update()
         ByteCoord cursor = m_context.selections().main().cursor();
         ByteCoord compl_beg = m_completions.begin;
         if (cursor.line == compl_beg.line and
-            is_in_range(cursor.column, compl_beg.column,
-                        compl_beg.column + longest_completion-1))
+            compl_beg.column <= cursor.column and
+            cursor.column < compl_beg.column + longest_completion)
         {
             String prefix = m_context.buffer().string(compl_beg, cursor);
 
diff --git a/src/utils.hh b/src/utils.hh
index c441cdf3..d8c6c994 100644
--- a/src/utils.hh
+++ b/src/utils.hh
@@ -132,12 +132,6 @@ const T& clamp(const T& val, const T& min, const T& max)
     return (val < min ? min : (val > max ? max : val));
 }
 
-template<typename T>
-bool is_in_range(const T& val, const T& min, const T& max)
-{
-    return min <= val and val <= max;
-}
-
 }
 
 #endif // utils_hh_INCLUDED