diff --git a/configs/ruby/MESI_CMP_directory.py b/configs/ruby/MESI_CMP_directory.py
--- a/configs/ruby/MESI_CMP_directory.py
+++ b/configs/ruby/MESI_CMP_directory.py
@@ -80,10 +80,12 @@
         #
         l1i_cache = L1Cache(size = options.l1i_size,
                             assoc = options.l1i_assoc,
-                            start_index_bit = block_size_bits)
+                            start_index_bit = block_size_bits,
+                            is_icache = True)
         l1d_cache = L1Cache(size = options.l1d_size,
                             assoc = options.l1d_assoc,
-                            start_index_bit = block_size_bits)
+                            start_index_bit = block_size_bits,
+                            is_icache = False)
 
         l1_cntrl = L1Cache_Controller(version = i,
                                       cntrl_id = cntrl_count,
diff --git a/configs/ruby/MOESI_CMP_directory.py b/configs/ruby/MOESI_CMP_directory.py
--- a/configs/ruby/MOESI_CMP_directory.py
+++ b/configs/ruby/MOESI_CMP_directory.py
@@ -80,10 +80,12 @@
         #
         l1i_cache = L1Cache(size = options.l1i_size,
                             assoc = options.l1i_assoc,
-                            start_index_bit = block_size_bits)
+                            start_index_bit = block_size_bits,
+                            is_icache = True)
         l1d_cache = L1Cache(size = options.l1d_size,
                             assoc = options.l1d_assoc,
-                            start_index_bit = block_size_bits)
+                            start_index_bit = block_size_bits,
+                            is_icache = False)
 
         l1_cntrl = L1Cache_Controller(version = i,
                                       cntrl_id = cntrl_count,