diff --git a/dlls/wineoss.drv/mmdevdrv.c b/dlls/wineoss.drv/mmdevdrv.c
index 77548045702..921253b62c2 100644
--- a/dlls/wineoss.drv/mmdevdrv.c
+++ b/dlls/wineoss.drv/mmdevdrv.c
@@ -994,7 +994,7 @@ static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient3 *iface,
         HANDLE event)
 {
     ACImpl *This = impl_from_IAudioClient3(iface);
-    struct oss_stream *stream = This->stream;
+    struct set_event_handle_params params;
 
     TRACE("(%p)->(%p)\n", This, event);
 
@@ -1004,24 +1004,11 @@ static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient3 *iface,
     if(!This->stream)
         return AUDCLNT_E_NOT_INITIALIZED;
 
-    oss_lock(stream);
+    params.stream = This->stream;
+    params.event = event;
+    OSS_CALL(set_event_handle, &params);
 
-    if(!(stream->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK)){
-        oss_unlock(stream);
-        return AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED;
-    }
-
-    if (stream->event){
-        oss_unlock(stream);
-        FIXME("called twice\n");
-        return HRESULT_FROM_WIN32(ERROR_INVALID_NAME);
-    }
-
-    stream->event = event;
-
-    oss_unlock(stream);
-
-    return S_OK;
+    return params.result;
 }
 
 static HRESULT WINAPI AudioClient_GetService(IAudioClient3 *iface, REFIID riid,
diff --git a/dlls/wineoss.drv/oss.c b/dlls/wineoss.drv/oss.c
index 72e917dfd76..3ea0ab42e3e 100644
--- a/dlls/wineoss.drv/oss.c
+++ b/dlls/wineoss.drv/oss.c
@@ -1043,6 +1043,26 @@ static NTSTATUS get_current_padding(void *args)
     return oss_unlock_result(stream, &params->result, S_OK);
 }
 
+static NTSTATUS set_event_handle(void *args)
+{
+    struct set_event_handle_params *params = args;
+    struct oss_stream *stream = params->stream;
+
+    oss_lock(stream);
+
+    if(!(stream->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK))
+        return oss_unlock_result(stream, &params->result, AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED);
+
+    if (stream->event){
+        FIXME("called twice\n");
+        return oss_unlock_result(stream, &params->result, HRESULT_FROM_WIN32(ERROR_INVALID_NAME));
+    }
+
+    stream->event = params->event;
+
+    return oss_unlock_result(stream, &params->result, S_OK);
+}
+
 unixlib_entry_t __wine_unix_call_funcs[] =
 {
     test_connect,
@@ -1058,4 +1078,5 @@ unixlib_entry_t __wine_unix_call_funcs[] =
     get_buffer_size,
     get_latency,
     get_current_padding,
+    set_event_handle,
 };
diff --git a/dlls/wineoss.drv/unixlib.h b/dlls/wineoss.drv/unixlib.h
index bd4b065c61e..73963b1871b 100644
--- a/dlls/wineoss.drv/unixlib.h
+++ b/dlls/wineoss.drv/unixlib.h
@@ -152,6 +152,13 @@ struct get_current_padding_params
     UINT32 *padding;
 };
 
+struct set_event_handle_params
+{
+    struct oss_stream *stream;
+    HANDLE event;
+    HRESULT result;
+};
+
 enum oss_funcs
 {
     oss_test_connect,
@@ -167,6 +174,7 @@ enum oss_funcs
     oss_get_buffer_size,
     oss_get_latency,
     oss_get_current_padding,
+    oss_set_event_handle,
 };
 
 extern unixlib_handle_t oss_handle;