diff --git a/pkgs/by-name/xn/xnee/package.nix b/pkgs/by-name/xn/xnee/package.nix
index 0ff40d245763..adccf198f2ac 100644
--- a/pkgs/by-name/xn/xnee/package.nix
+++ b/pkgs/by-name/xn/xnee/package.nix
@@ -3,6 +3,7 @@
   stdenv,
   fetchurl,
   fetchpatch,
+  fetchDebianPatch,
   autoreconfHook,
   pkg-config,
   gtk2,
@@ -31,6 +32,12 @@ stdenv.mkDerivation (finalAttrs: {
       url = "https://savannah.gnu.org/bugs/download.php?file_id=49534";
       hash = "sha256-Ar5SyVIEp8/knDHm+4f0KWAH+A5gGhXGezEqL7xkQhI=";
     })
+    (fetchDebianPatch {
+      inherit (finalAttrs) pname version;
+      debianRevision = "9.2";
+      patch = "fix-implicit-declarations.patch";
+      hash = "sha256-ct/ATuiC6b7rw9n2wsRNKvfj02i7V20bMOzL7pKDd0A=";
+    })
   ];
 
   postPatch =