diff --git a/index.bs b/index.bs
index 11d65659..8cc76a84 100644
--- a/index.bs
+++ b/index.bs
@@ -1215,6 +1215,7 @@ partial interface MLGraphBuilder {
   </summary>
   <div class=algorithm-steps>
     1. [=Assert=]: |op| is one of "argMin", "argMax".
+    1. If |options|.{{MLArgMinMaxOptions/axes}} is given, then if any its [=list/items=] are not in [=the range=] 0 to |input|'s [=MLOperand/rank=], exclusive, return failure.
     1. Let |outputShape| be the result of [=MLGraphBuilder/calculating reduction output sizes=] given |input|'s [=MLOperand/shape=], |options|.{{MLArgMinMaxOptions/axes}} (if it [=map/exists=]), and |options|.{{MLArgMinMaxOptions/keepDimensions}}. If that returns failure, then [=exception/throw=] a "{{DataError}}" {{DOMException}}.
     1. Let |desc| be a new {{MLOperandDescriptor}}.
     1. Set |desc|.{{MLOperandDescriptor/dataType}} to {{MLOperandDataType/"int64"}}.
@@ -4892,7 +4893,6 @@ partial interface MLGraphBuilder {
   </summary>
   <div class=algorithm-steps>
     1. Let |inputSize| be |inputShape|'s [=list/size=].
-    1. If |axes| is given, then if any its [=list/items=] are not in [=the range=] 0 to |inputSize|, exclusive, return failure.
     1. If |axes| is not given, let |axes| be [=the range=] 0 to |inputSize|, exclusive.
     1. If |keepDimensions| is true, then:
         1. Let |outputShape| be a [=list/clone=] of |inputShape|.
@@ -4912,6 +4912,7 @@ partial interface MLGraphBuilder {
   </summary>
   <div class=algorithm-steps>
     1. [=Assert=]: |op| is one of "reduceL1", "reduceL2", "reduceLogSum", "reduceLogSumExp", "reduceMax", "reduceMean", "reduceMin", "reduceProduct", "reduceSum", "reduceSumSquare".
+    1. If |options|.{{MLReduceOptions/axes}} is given, then if any its [=list/items=] are not in [=the range=] 0 to |input|'s [=MLOperand/rank=], exclusive, return failure.
     1. Let |outputShape| be the result of [=MLGraphBuilder/calculating reduction output sizes=] given |input|'s [=MLOperand/shape=], |options|.{{MLReduceOptions/axes}} (if it [=map/exists=]), and |options|.{{MLReduceOptions/keepDimensions}}. If that returns failure, then [=exception/throw=] a "{{DataError}}" {{DOMException}}.
     1. Let |desc| be a new {{MLOperandDescriptor}}.
     1. Set |desc|.{{MLOperandDescriptor/dataType}} to |input|'s [=MLOperand/dataType=].