diff --git a/pkgs/development/libraries/apr-util/default.nix b/pkgs/development/libraries/apr-util/default.nix
index fc417b2b58a..dfaa340dcf9 100644
--- a/pkgs/development/libraries/apr-util/default.nix
+++ b/pkgs/development/libraries/apr-util/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     ${if ldapSupport then "--with-ldap" else ""}
   '';
 
-  buildInputs = if ldapSupport then [ openldap ] else [];
+  propagatedBuildInputs = stdenv.lib.optional ldapSupport openldap;
   
   passthru = {
     inherit bdbSupport;
diff --git a/pkgs/servers/http/apache-httpd/default.nix b/pkgs/servers/http/apache-httpd/default.nix
index 73dd676e3fb..fd01be65e5d 100644
--- a/pkgs/servers/http/apache-httpd/default.nix
+++ b/pkgs/servers/http/apache-httpd/default.nix
@@ -17,8 +17,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [perl apr aprutil pcre] ++
-    stdenv.lib.optional sslSupport openssl ++
-    stdenv.lib.optional ldapSupport openldap;
+    stdenv.lib.optional sslSupport openssl;
 
   # An apr-util header file includes an apr header file
   # through #include "" (quotes)