diff --git a/pkgs/applications/virtualization/OVMF/default.nix b/pkgs/applications/virtualization/OVMF/default.nix
index 76d4db7d807c..aba83449423b 100644
--- a/pkgs/applications/virtualization/OVMF/default.nix
+++ b/pkgs/applications/virtualization/OVMF/default.nix
@@ -84,8 +84,8 @@ let
 
 in
 
-assert platformSpecific ? ${cpuName};
 assert msVarsTemplate -> fdSize4MB;
+assert msVarsTemplate -> platformSpecific ? ${cpuName};
 assert msVarsTemplate -> platformSpecific.${cpuName} ? msVarsArgs;
 
 edk2.mkDerivation projectDscPath (finalAttrs: {