diff --git a/PENDING.md b/PENDING.md
index bca868153..3de7c103d 100644
--- a/PENDING.md
+++ b/PENDING.md
@@ -25,6 +25,7 @@ BREAKING CHANGES
   * [\#2798](https://github.com/cosmos/cosmos-sdk/issues/2798) Governance API has miss-spelled English word in JSON response ('depositer' -> 'depositor')
   * [\#2943](https://github.com/cosmos/cosmos-sdk/pull/2943) Transaction action tags equal the message type. Stake EndBlocker tags are included.
   * [\#2945](https://github.com/cosmos/cosmos-sdk/issues/2945) CreateValidator pubKey type is now validated against `ConsensusParams`
+  * [\#2944](https://github.com/cosmos/cosmos-sdk/pull/2944) Message SetWithdrawAddress had duplicate JSON field name ('delegator_addr' -> 'withdraw_addr')
 
 * Tendermint
   - Update to Tendermint 0.27.0
diff --git a/x/distribution/types/msg.go b/x/distribution/types/msg.go
index f7c80c212..167b3b4c5 100644
--- a/x/distribution/types/msg.go
+++ b/x/distribution/types/msg.go
@@ -17,7 +17,7 @@ var _, _ sdk.Msg = &MsgWithdrawDelegatorReward{}, &MsgWithdrawValidatorRewardsAl
 // msg struct for changing the withdraw address for a delegator (or validator self-delegation)
 type MsgSetWithdrawAddress struct {
 	DelegatorAddr sdk.AccAddress `json:"delegator_addr"`
-	WithdrawAddr  sdk.AccAddress `json:"delegator_addr"`
+	WithdrawAddr  sdk.AccAddress `json:"withdraw_addr"`
 }
 
 func NewMsgSetWithdrawAddress(delAddr, withdrawAddr sdk.AccAddress) MsgSetWithdrawAddress {