diff --git a/Makefile b/Makefile
index 30929ed..9180512 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ CONFIG_REGION_QUARANTINE_RANDOM_LENGTH := 128
 CONFIG_REGION_QUARANTINE_QUEUE_LENGTH := 1024
 CONFIG_REGION_QUARANTINE_SKIP_THRESHOLD := 33554432 # 32MiB
 CONFIG_FREE_SLABS_QUARANTINE_RANDOM_LENGTH := 32
-CONFIG_CLASS_REGION_SIZE := 137438953472 # 128GiB
+CONFIG_CLASS_REGION_SIZE := 34359738368 # 32GiB
 CONFIG_N_ARENA := 4
 CONFIG_STATS := false