diff --git a/pkgs/servers/http/apache-httpd/2.4.nix b/pkgs/servers/http/apache-httpd/2.4.nix
index 2bbe9798de4..c6d0b3ad73b 100644
--- a/pkgs/servers/http/apache-httpd/2.4.nix
+++ b/pkgs/servers/http/apache-httpd/2.4.nix
@@ -36,6 +36,7 @@ stdenv.mkDerivation rec {
     --with-pcre=${pcre}
     --disable-maintainer-mode
     --disable-debugger-mode
+    --enable-mpm=event
     --enable-mods-shared=all
     --enable-mpms-shared=all
     --enable-cern-meta