diff --git a/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp b/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp
index 50a319e480..15c038e40a 100644
--- a/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp
+++ b/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp
@@ -1067,6 +1067,13 @@ hsa_status_t GpuAgent::GetInfo(hsa_agent_info_t attribute, void* value) const {
       *((bool*)value) = properties_.Capability.ui32.CoherentHostAccess == 1;
       break;
     case HSA_AMD_AGENT_INFO_COOPERATIVE_COMPUTE_UNIT_COUNT:
+      if (core::Runtime::runtime_singleton_->flag().coop_cu_count() &&
+          !(core::Runtime::runtime_singleton_->flag().cu_mask(enum_index_).empty())) {
+        debug_warning("Cooperative launch and CU masking are currently incompatible!");
+        *((uint32_t*)value) = 0;
+        break;
+      }
+
       if (core::Runtime::runtime_singleton_->flag().coop_cu_count() &&
           (isa_->GetMajorVersion() == 9) && (isa_->GetMinorVersion() == 0) &&
           (isa_->GetStepping() == 10)) {