diff --git a/pkgs/servers/openafs/1.6/module.nix b/pkgs/servers/openafs/1.6/module.nix
index bf4f36bb250..809c8af36d9 100644
--- a/pkgs/servers/openafs/1.6/module.nix
+++ b/pkgs/servers/openafs/1.6/module.nix
@@ -41,7 +41,7 @@ in stdenv.mkDerivation rec {
 
   installPhase = ''
     mkdir -p ${modDestDir}
-    cp src/libafs/MODLOAD-*/libafs-${kernel.version}.* ${modDestDir}/libafs.ko
+    cp src/libafs/MODLOAD-*/libafs-${kernel.modDirVersion}.* ${modDestDir}/libafs.ko
     xz -f ${modDestDir}/libafs.ko
   '';
 
diff --git a/pkgs/servers/openafs/1.8/module.nix b/pkgs/servers/openafs/1.8/module.nix
index 356d3cf37c3..57a4ea02ee8 100644
--- a/pkgs/servers/openafs/1.8/module.nix
+++ b/pkgs/servers/openafs/1.8/module.nix
@@ -44,7 +44,7 @@ in stdenv.mkDerivation rec {
 
   installPhase = ''
     mkdir -p ${modDestDir}
-    cp src/libafs/MODLOAD-*/libafs-${kernel.version}.* ${modDestDir}/libafs.ko
+    cp src/libafs/MODLOAD-*/libafs-${kernel.modDirVersion}.* ${modDestDir}/libafs.ko
     xz -f ${modDestDir}/libafs.ko
   '';