diff --git a/configs/ruby/GPU_VIPER.py b/configs/ruby/GPU_VIPER.py
index 4ebd8ce342..9841213129 100644
--- a/configs/ruby/GPU_VIPER.py
+++ b/configs/ruby/GPU_VIPER.py
@@ -395,7 +395,7 @@ def define_options(parser):
                       "cache controller")
 
 def create_system(options, full_system, system, dma_devices, bootmem,
-                  ruby_system):
+                  ruby_system, cpus):
     if buildEnv['PROTOCOL'] != 'GPU_VIPER':
         panic("This script requires the GPU_VIPER protocol to be built.")
 
diff --git a/configs/ruby/Garnet_standalone.py b/configs/ruby/Garnet_standalone.py
index 13e990d15a..f8e21fcf2f 100644
--- a/configs/ruby/Garnet_standalone.py
+++ b/configs/ruby/Garnet_standalone.py
@@ -40,7 +40,7 @@ def define_options(parser):
     return
 
 def create_system(options, full_system, system, dma_ports, bootmem,
-                  ruby_system):
+                  ruby_system, cpus):
     if buildEnv['PROTOCOL'] != 'Garnet_standalone':
         panic("This script requires Garnet_standalone protocol to be built.")