diff --git a/pkgs/development/interpreters/wavm/default.nix b/pkgs/development/interpreters/wavm/default.nix
index a9ed260a0fd0..c4d4c4f5f2d2 100644
--- a/pkgs/development/interpreters/wavm/default.nix
+++ b/pkgs/development/interpreters/wavm/default.nix
@@ -22,5 +22,6 @@ llvmPackages.stdenv.mkDerivation (finalAttrs: {
     homepage = "https://wavm.github.io";
     license = licenses.bsd3;
     maintainers = with maintainers; [ ereslibre ];
+    platforms = platforms.unix;
   };
 })
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4f89a1d73db6..c4615d891668 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -41381,7 +41381,9 @@ with pkgs;
     inherit (darwin.apple_sdk.frameworks) CoreFoundation SystemConfiguration Security;
   };
 
-  wavm = callPackage ../development/interpreters/wavm { };
+  wavm = callPackage ../development/interpreters/wavm {
+    llvmPackages = llvmPackages_12;
+  };
 
   yabasic = callPackage ../development/interpreters/yabasic { };