diff --git a/index.bs b/index.bs
index 981eb5a2..0bec31be 100644
--- a/index.bs
+++ b/index.bs
@@ -3053,6 +3053,7 @@ partial dictionary MLOpSupportLimits {
                 :: Let « |outputChannels|, |filterInputChannels|, |filterHeight|, |filterWidth| » be |filterShape|.
             </dl>
         1. If |inputChannels| % |options|.{{MLConv2dOptions/groups}} is not 0, then [=exception/throw=] a {{TypeError}}.
+        1. If |outputChannels| % |options|.{{MLConv2dOptions/groups}} is not 0, then [=exception/throw=] a {{TypeError}}.
         1. Otherwise, if |inputChannels| / |options|.{{MLConv2dOptions/groups}} is not equal to |filterInputChannels|, then [=exception/throw=] a {{TypeError}}.
         1. If |options|.{{MLConv2dOptions/bias}} [=map/exists=], then:
             1. If its [=MLOperand/shape=] is not [=list/equal=] to « |outputChannels| », then [=exception/throw=] a {{TypeError}}.