diff --git a/pkgs/development/compilers/llvm/13/llvm/default.nix b/pkgs/development/compilers/llvm/13/llvm/default.nix
index a15bcc872a6d..451dfa8463ef 100644
--- a/pkgs/development/compilers/llvm/13/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/13/llvm/default.nix
@@ -59,6 +59,13 @@ in stdenv.mkDerivation (rec {
       sha256 = "18l6mrvm2vmwm77ckcnbjvh6ybvn72rhrb799d4qzwac4x2ifl7g";
       stripLen = 1;
     })
+
+    # Fix tests on non-x86 platforms: https://reviews.llvm.org/D107020
+    (fetchpatch {
+      url = "https://github.com/llvm/llvm-project/commit/5060224d9eed8b8359ed5090bb7c577b8575e9e7.patch";
+      sha256 = "1s2n3pqa11pmlifys1jkppmw858p5i64xszpc8ppc98middv19v1";
+      stripLen = 1;
+    })
   ] ++ lib.optional enablePolly ./gnu-install-dirs-polly.patch;
 
   postPatch = optionalString stdenv.isDarwin ''