diff --git a/src/gpu-compute/gpu_command_processor.hh b/src/gpu-compute/gpu_command_processor.hh
index 8f6bfe2790..ebdf9ae7a6 100644
--- a/src/gpu-compute/gpu_command_processor.hh
+++ b/src/gpu-compute/gpu_command_processor.hh
@@ -87,7 +87,7 @@ class GPUCommandProcessor : public HSADevice
 
     void updateHsaSignal(Addr signal_handle, uint64_t signal_value) override;
 
-    uint64_t functionalReadHsaSignal(Addr signal_handle);
+    uint64_t functionalReadHsaSignal(Addr signal_handle) override;
 
     Addr getHsaSignalValueAddr(Addr signal_handle)
     {