diff --git a/sagemaker-core/src/sagemaker/core/iterators.py b/sagemaker-core/src/sagemaker/core/iterators.py
index 049a3a3cf5..abdaab4e05 100644
--- a/sagemaker-core/src/sagemaker/core/iterators.py
+++ b/sagemaker-core/src/sagemaker/core/iterators.py
@@ -108,7 +108,7 @@ def __next__(self):
                 # handle API response errors and force terminate.
                 handle_stream_errors(chunk)
                 # print and move on to next response byte
-                print("Unknown event type:" + chunk)
+                print("Unknown event type:", chunk)
                 continue
             return chunk["PayloadPart"]["Bytes"]
 
@@ -190,7 +190,7 @@ def __next__(self):
                 # handle API response errors and force terminate.
                 handle_stream_errors(chunk)
                 # print and move on to next response byte
-                print("Unknown event type:" + chunk)
+                print("Unknown event type:", chunk)
                 continue
 
             # Check buffer size before writing to prevent unbounded memory consumption
diff --git a/sagemaker-core/tests/unit/test_iterators.py b/sagemaker-core/tests/unit/test_iterators.py
index d9c6831ce9..fcefbcb3d5 100644
--- a/sagemaker-core/tests/unit/test_iterators.py
+++ b/sagemaker-core/tests/unit/test_iterators.py
@@ -254,3 +254,19 @@ def test_line_iterator_no_trailing_newline_at_end():
 
     with pytest.raises(StopIteration):
         next(iterator)
+
+
+def test_byte_iterator_skips_unknown_event_type():
+    """Test that ByteIterator skips events it does not recognize."""
+    event_stream = [{"SomeNewEvent": {}}, {"PayloadPart": {"Bytes": b"hello"}}]
+    iterator = ByteIterator(event_stream)
+
+    assert next(iterator) == b"hello"
+
+
+def test_line_iterator_skips_unknown_event_type():
+    """Test that LineIterator skips events it does not recognize."""
+    event_stream = [{"SomeNewEvent": {}}, {"PayloadPart": {"Bytes": b"hello\n"}}]
+    iterator = LineIterator(event_stream)
+
+    assert next(iterator) == b"hello"