diff --git a/src/aws_encryption_sdk/streaming_client.py b/src/aws_encryption_sdk/streaming_client.py
index aa64b7b15..98b7c7fa6 100644
--- a/src/aws_encryption_sdk/streaming_client.py
+++ b/src/aws_encryption_sdk/streaming_client.py
@@ -734,7 +734,7 @@ class DecryptorConfig(_ClientConfig):
 
 
 class StreamDecryptor(_EncryptionStream):  # pylint: disable=too-many-instance-attributes
-    """Provides a streaming encryptor for encrypting a stream source.
+    """Provides a streaming decryptor for decrypting a stream source.
     Behaves as a standard file-like object.
 
     .. note::