diff --git a/CHANGELOG_PENDING.md b/CHANGELOG_PENDING.md
index e814e4b92..1a8112718 100644
--- a/CHANGELOG_PENDING.md
+++ b/CHANGELOG_PENDING.md
@@ -26,3 +26,4 @@ Friendly reminder, we have a [bug bounty program](https://hackerone.com/tendermi
 
 ### BUG FIXES
 
+- [crypto] \#5707 Fix infinite recursion in string formatting of Secp256k1 keys (@erikgrinaker)
diff --git a/crypto/secp256k1/secp256k1.go b/crypto/secp256k1/secp256k1.go
index fe5296900..26926a966 100644
--- a/crypto/secp256k1/secp256k1.go
+++ b/crypto/secp256k1/secp256k1.go
@@ -158,7 +158,7 @@ func (pubKey PubKey) Bytes() []byte {
 }
 
 func (pubKey PubKey) String() string {
-	return fmt.Sprintf("PubKeySecp256k1{%X}", pubKey[:])
+	return fmt.Sprintf("PubKeySecp256k1{%X}", []byte(pubKey))
 }
 
 func (pubKey PubKey) Equals(other crypto.PubKey) bool {