diff --git a/pkgs/servers/http/apache-httpd/2.4.nix b/pkgs/servers/http/apache-httpd/2.4.nix
index 44fa145b605..ed0c3ec6ea9 100644
--- a/pkgs/servers/http/apache-httpd/2.4.nix
+++ b/pkgs/servers/http/apache-httpd/2.4.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [perl] ++
     optional ldapSupport openldap ++    # there is no --with-ldap flag
-    optional libxml2Support libxml2;    # there is --with-libxml2, but it doesn't work
+    optional libxml2Support libxml2;
 
   # Required for ‘pthread_cancel’.
   NIX_LDFLAGS = "-lgcc_s";
@@ -41,6 +41,7 @@ stdenv.mkDerivation rec {
     ${optionalString proxySupport "--enable-proxy"}
     ${optionalString sslSupport "--enable-ssl --with-ssl=${openssl}"}
     ${optionalString luaSupport "--enable-lua --with-lua=${lua5}"}
+    ${optionalString libxml2Support "--with-libxml2=${libxml2}/include/libxml2"}
   '';
 
   postInstall = ''