diff --git a/PKGBUILD b/PKGBUILD
index bef8503..eeaae7d 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -114,7 +114,7 @@ _package() {
   echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"
 
   echo "Installing modules..."
-  _make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
+  ZSTD_CLEVEL=19 _make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
     DEPMOD=/doesnt/exist modules_install  # Suppress depmod
 
   # remove build and source links