diff --git a/include/clap/helpers/plugin-entry.hxx b/include/clap/helpers/plugin-entry.hxx
index ccd4976..0cdc487 100644
--- a/include/clap/helpers/plugin-entry.hxx
+++ b/include/clap/helpers/plugin-entry.hxx
@@ -3,6 +3,7 @@
 #include <cassert>
 #include <iostream>
 #include <sstream>
+#include <cstring>
 
 namespace clap { namespace helpers {