diff --git a/configs/ruby/MESI_Three_Level.py b/configs/ruby/MESI_Three_Level.py
index 91ccb58..b1fd281 100644
--- a/configs/ruby/MESI_Three_Level.py
+++ b/configs/ruby/MESI_Three_Level.py
@@ -78,10 +78,10 @@
     dma_cntrl_nodes = []
 
     assert (options.num_cpus % options.num_clusters == 0)
-    num_cpus_per_cluster = options.num_cpus / options.num_clusters
+    num_cpus_per_cluster = options.num_cpus // options.num_clusters
 
     assert (options.num_l2caches % options.num_clusters == 0)
-    num_l2caches_per_cluster = options.num_l2caches / options.num_clusters
+    num_l2caches_per_cluster = options.num_l2caches // options.num_clusters
 
     l2_bits = int(math.log(num_l2caches_per_cluster, 2))
     block_size_bits = int(math.log(options.cacheline_size, 2))