diff --git a/pkgs/applications/networking/seafile-client/default.nix b/pkgs/applications/networking/seafile-client/default.nix
index 3e58e83143f..ddb9a32dae2 100644
--- a/pkgs/applications/networking/seafile-client/default.nix
+++ b/pkgs/applications/networking/seafile-client/default.nix
@@ -1,4 +1,4 @@
-{ mkDerivation, lib, fetchFromGitHub, pkg-config, cmake, qtbase, qttools
+{ mkDerivation, lib, fetchFromGitHub, fetchpatch, pkg-config, cmake, qtbase, qttools
 , seafile-shared, jansson, libsearpc
 , withShibboleth ? true, qtwebengine }:
 
@@ -13,6 +13,15 @@ mkDerivation rec {
     sha256 = "2vV+6ZXjVg81JVLfWeD0UK+RdmpBxBU2Ozx790WFSyw=";
   };
 
+  patches = [
+    # Fix #122505
+    (fetchpatch {
+      url = "https://aur.archlinux.org/cgit/aur.git/plain/fix_build_with_glib2.diff?h=seafile-client&id=7be253aaa2bdb6771721f45aa08bc875c8001c5a";
+      name = "fix_build_with_glib2.diff";
+      sha256 = "0hl7rcqfr8k62c1pr133bp3j63b905izaaggmgvr1af4jibal05v";
+    })
+  ];
+
   nativeBuildInputs = [ pkg-config cmake ];
   buildInputs = [ qtbase qttools seafile-shared jansson libsearpc ]
     ++ lib.optional withShibboleth qtwebengine;