diff --git a/lib/Dialect/Top/Transforms/ProcessorAssign.cpp b/lib/Dialect/Top/Transforms/ProcessorAssign.cpp
index ce989f8b2..b3bf36719 100644
--- a/lib/Dialect/Top/Transforms/ProcessorAssign.cpp
+++ b/lib/Dialect/Top/Transforms/ProcessorAssign.cpp
@@ -29,7 +29,7 @@ class ProcessorAssignPass : public ProcessorAssignBase<ProcessorAssignPass> {
       // only one device
       num_device = 1;
     }
-    if (!(module::isBM1688() || module::isSG2260Family())) {
+    if (!(module::isBM1688() || module::isSG2260Family()) || chip_ == "cv186x") {
       // only one core
       num_core = 1;
     }