diff --git a/pkgs/development/cuda-modules/generic-builders/multiplex.nix b/pkgs/development/cuda-modules/generic-builders/multiplex.nix
index 6353b07545a4..b8ac84bda913 100644
--- a/pkgs/development/cuda-modules/generic-builders/multiplex.nix
+++ b/pkgs/development/cuda-modules/generic-builders/multiplex.nix
@@ -63,11 +63,12 @@ let
   # computeName :: Package -> String
   computeName = {version, ...}: mkVersionedPackageName pname version;
 
-  # Check whether a package supports our CUDA version
+  # Check whether a package supports our CUDA version and platform.
   # isSupported :: Package -> Bool
   isSupported =
     package:
-    !(strings.hasPrefix "unsupported" package.platform)
+    # The `platform` attribute of the package is NVIDIA's name for a redistributable architecture.
+    redistArch == package.platform
     && strings.versionAtLeast cudaVersion package.minCudaVersion
     && strings.versionAtLeast package.maxCudaVersion cudaVersion;