diff --git a/tests/scripts/generate_ssl_session_reset_check.py b/tests/scripts/generate_ssl_session_reset_check.py
index 78e0b6921f..8e26d9ee1a 100755
--- a/tests/scripts/generate_ssl_session_reset_check.py
+++ b/tests/scripts/generate_ssl_session_reset_check.py
@@ -106,7 +106,7 @@ SPECIAL_BEHAVIORS = {
     'out_buf_len': ['TEST_ASSERT(after->out_buf_len == MBEDTLS_SSL_OUT_BUFFER_LEN);'],
 }
 
-NAMED_STRUCTURES = frozenset([  
+NAMED_STRUCTURES = frozenset([
     'dtls_srtp_info',
 ])