diff --git a/src/GafferML/Tensor.cpp b/src/GafferML/Tensor.cpp
index 41a55ff9b96..41fbecf36a6 100644
--- a/src/GafferML/Tensor.cpp
+++ b/src/GafferML/Tensor.cpp
@@ -274,7 +274,7 @@ bool Tensor::isEqualTo( const IECore::Object *other ) const
 				using ElementType = remove_const_t<remove_pointer_t<decltype( data )>>;
 				const auto *otherData = otherTensor->m_state->value.GetTensorData<ElementType>();
 				const size_t count = m_state->value.GetTensorTypeAndShapeInfo().GetElementCount();
-				equal = memcmp( data, otherData, count * sizeof( *data ) );
+				equal = memcmp( data, otherData, count * sizeof( *data ) ) == 0;
 			}
 		);