diff --git a/src/riscv-fs/configs/system/system.py b/src/riscv-fs/configs/system/system.py
index 3f545f1..85d162d 100755
--- a/src/riscv-fs/configs/system/system.py
+++ b/src/riscv-fs/configs/system/system.py
@@ -119,6 +119,9 @@
         # Create the memory controller
         self.createMemoryControllerDDR3()
 
+        # Set number of CPU cores
+        self.platform.setNumCores(num_cpus)
+
         self.setupInterrupts()
 
         # using RiscvLinux as the base full system workload