diff --git a/src/proto-types-gen/src/tendermint/crypto/proof.ts b/src/proto-types-gen/src/tendermint/crypto/proof.ts
index 4794e3d..7a6e8b3 100644
--- a/src/proto-types-gen/src/tendermint/crypto/proof.ts
+++ b/src/proto-types-gen/src/tendermint/crypto/proof.ts
@@ -26,7 +26,7 @@ export interface DominoOp {
 
 /**
  * ProofOp defines an operation used for calculating Merkle root
- * The data could be arbitrary format, providing nessecary data
+ * The data could be arbitrary format, providing necessary data
  * for example neighbouring node hash
  */
 export interface ProofOp {
diff --git a/src/proto-types-gen/third_party/proto/confio/proofs.proto b/src/proto-types-gen/third_party/proto/confio/proofs.proto
index da43503..4620c51 100644
--- a/src/proto-types-gen/third_party/proto/confio/proofs.proto
+++ b/src/proto-types-gen/third_party/proto/confio/proofs.proto
@@ -42,7 +42,7 @@ enum LengthOp {
 
 /**
 ExistenceProof takes a key and a value and a set of steps to perform on it.
-The result of peforming all these steps will provide a "root hash", which can
+The result of performing all these steps will provide a "root hash", which can
 be compared to the value in a header.
 
 Since it is computationally infeasible to produce a hash collission for any of the used