diff --git a/scripts/mbedtls_framework/ssl_session_reset_check.py b/scripts/mbedtls_framework/ssl_session_reset_check.py
index 54c5612a5..a72769f5d 100644
--- a/scripts/mbedtls_framework/ssl_session_reset_check.py
+++ b/scripts/mbedtls_framework/ssl_session_reset_check.py
@@ -131,7 +131,7 @@ class CStruct:
         """Return structure field type based on either its name or the fact
         that it belongs to the list of special symbols/named structures"""
         # Check for fields with custom check rules
-        if self.fields_info.special.get(name, None) == ResetBehavior.SPECIAL:
+        if name in self.fields_info.special:
             return ElementType.SPECIAL
         # Check for named structures
         if name in self.fields_info.named_structures: