diff --git a/include/laserpants/dotenv/dotenv.h b/include/laserpants/dotenv/dotenv.h
index d56fc06..6192399 100644
--- a/include/laserpants/dotenv/dotenv.h
+++ b/include/laserpants/dotenv/dotenv.h
@@ -39,7 +39,6 @@
 #include <fstream>
 #include <iostream>
 #include <algorithm>
-#include <functional>
 #include <cctype>
 
 ///