diff --git a/thop/vision/onnx_counter.py b/thop/vision/onnx_counter.py
index 8beb39a..d36da69 100644
--- a/thop/vision/onnx_counter.py
+++ b/thop/vision/onnx_counter.py
@@ -304,7 +304,7 @@ def onnx_counter_globalaveragepool(diction, node):
     macs = calculate_zero_ops()
     output_name = node.output[0]
     input_size = diction[node.input[0]]
-    output_size = input_size
+    output_size = np.append(input_size[:2], np.ones(len(input_size) - 2, input_size.dtype))
     return macs, output_size, output_name