diff --git a/reg-tests/compression/s00000.vtc b/reg-tests/compression/s00000.vtc
index 6baddea..c3be36e 100644
--- a/reg-tests/compression/s00000.vtc
+++ b/reg-tests/compression/s00000.vtc
@@ -3,6 +3,7 @@
 varnishtest "Compression validation"
 #REQUIRE_VERSION=1.6
 #REQUIRE_OPTIONS=ZLIB|SLZ,LUA
+#REGTEST_TYPE=slow
 
 feature ignore_unknown_macro