diff --git a/pkgs/os-specific/linux/kmod/aggregator.nix b/pkgs/os-specific/linux/kmod/aggregator.nix
index 88069ba4bf1..9bd7c8480c1 100644
--- a/pkgs/os-specific/linux/kmod/aggregator.nix
+++ b/pkgs/os-specific/linux/kmod/aggregator.nix
@@ -17,10 +17,12 @@ buildEnv {
 
       echo "kernel version is $kernelVersion"
 
+      shopt -s extglob
+
       # Regenerate the depmod map files.  Be sure to pass an explicit
       # kernel version number, otherwise depmod will use `uname -r'.
       if test -w $out/lib/modules/$kernelVersion; then
-          rm -f $out/lib/modules/$kernelVersion/modules.*
+          rm -f $out/lib/modules/$kernelVersion/modules.!(builtin*|order*)
           ${kmod}/bin/depmod -b $out -a $kernelVersion
       fi
     '';