diff --git a/tools/testing/cc/aws_kms_aead_cli.cc b/tools/testing/cc/aws_kms_aead_cli.cc
index 5b852f0e17fc060886ece00d516db440eac46e83..be88269fad245f0529f200f21860031dafec899a 100644
--- a/tools/testing/cc/aws_kms_aead_cli.cc
+++ b/tools/testing/cc/aws_kms_aead_cli.cc
@@ -40,7 +40,7 @@ using crypto::tink::integration::awskms::AwsKmsClient;
 //   operation: the actual AEAD-operation, i.e. "encrypt" or "decrypt"
 //   input-file:  name of the file with input (plaintext for encryption, or
 //                or ciphertext for decryption)
-//   associated-data:  a std::string to be used as assciated data
+//   associated-data:  a std::string to be used as associated data
 //   output-file:  name of the file for the resulting output
 int main(int argc, char** argv) {
   if (argc != 7) {
diff --git a/tools/testing/cc/gcp_kms_aead_cli.cc b/tools/testing/cc/gcp_kms_aead_cli.cc
index 6002466f9966b460bd1d652cc0bf74fd744c0fd7..bfb27985078a1fc926baa3868a7da26562721347 100644
--- a/tools/testing/cc/gcp_kms_aead_cli.cc
+++ b/tools/testing/cc/gcp_kms_aead_cli.cc
@@ -33,7 +33,7 @@ using crypto::tink::integration::gcpkms::GcpKmsClient;
 //   operation: the actual AEAD-operation, i.e. "encrypt" or "decrypt"
 //   input-file:  name of the file with input (plaintext for encryption, or
 //                or ciphertext for decryption)
-//   associated-data:  a std::string to be used as assciated data
+//   associated-data:  a std::string to be used as associated data
 //   output-file:  name of the file for the resulting output
 int main(int argc, char** argv) {
   if (argc != 7) {