diff --git a/pkgs/tools/networking/uwimap/default.nix b/pkgs/tools/networking/uwimap/default.nix
index 1da9ca96984..e2c83bcb975 100644
--- a/pkgs/tools/networking/uwimap/default.nix
+++ b/pkgs/tools/networking/uwimap/default.nix
@@ -18,8 +18,9 @@ stdenv.mkDerivation {
     ++ stdenv.lib.optional (!stdenv.isDarwin) pam;
 
   patchPhase = ''
-    sed -i -e s,/usr/local/ssl,${openssl}, \
-      src/osdep/unix/Makefile
+    sed -i src/osdep/unix/Makefile -e 's,/usr/local/ssl,${openssl},'
+    sed -i src/osdep/unix/Makefile -e 's,^SSLCERTS=.*,SSLCERTS=/etc/ssl/certs,'
+    sed -i src/osdep/unix/Makefile -e 's,^SSLLIB=.*,SSLLIB=${openssl.out}/lib,'
   '';
 
   NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.isDarwin