diff --git a/QSVHelper/Encoder.h b/QSVHelper/Encoder.h
index 3676daf6..665b4169 100644
--- a/QSVHelper/Encoder.h
+++ b/QSVHelper/Encoder.h
@@ -453,7 +453,7 @@ struct Encoder
         }
     }
 
-    int EncodeLoop(IPCSignal &stop, safe_handle &obs_handle)
+    int EncodeLoop(ipc_stop &stop, safe_handle &obs_handle)
     {
         IPCWaiter waiter;
         waiter.push_back(stop.signal_);
diff --git a/Source/Encoder_QSV.cpp b/Source/Encoder_QSV.cpp
index 19f27d8c..9ff8cc5e 100644
--- a/Source/Encoder_QSV.cpp
+++ b/Source/Encoder_QSV.cpp
@@ -336,7 +336,7 @@ class QSVEncoder : public VideoEncoder
 
     safe_handle qsvhelper_process,
                 qsvhelper_thread;
-    IPCSignal stop;
+    ipc_stop stop;
 
     ipc_bitstream_buff bs_buff;
     ipc_bitstream_info bs_info;