diff --git a/pkgs/tools/networking/kea/default.nix b/pkgs/tools/networking/kea/default.nix
index bc35a25cfde8..54ae358b5bcd 100644
--- a/pkgs/tools/networking/kea/default.nix
+++ b/pkgs/tools/networking/kea/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   configureFlags = [
     "--localstatedir=/var"
     "--with-pgsql=${postgresql}/bin/pg_config"
-    "--with-mysql=${mysql.connector-c}/bin/mysql_config"
+    "--with-mysql=${mysql.connector-c.dev}/bin/mysql_config"
   ];
 
   nativeBuildInputs = [ autoreconfHook pkgconfig ];