diff --git a/pkgs/os-specific/linux/kmod/aggregator.nix b/pkgs/os-specific/linux/kmod/aggregator.nix
index 153eda3a7eefd..7358dadb4fde2 100644
--- a/pkgs/os-specific/linux/kmod/aggregator.nix
+++ b/pkgs/os-specific/linux/kmod/aggregator.nix
@@ -9,7 +9,8 @@
 buildEnv {
   inherit name;
 
-  paths = modules;
+  # Automatically extract the "modules" output from derivations that have it
+  paths = map (m: m.modules or m) modules;
 
   postBuild = ''
     source ${stdenvNoCC}/setup