diff --git a/src/onelogin/saml2/authn_request.py b/src/onelogin/saml2/authn_request.py
index 42585e8b..d2ed96d7 100644
--- a/src/onelogin/saml2/authn_request.py
+++ b/src/onelogin/saml2/authn_request.py
@@ -97,21 +97,23 @@ def __init__(self, settings, force_authn=False, is_passive=False, set_nameid_pol
             )
 
         requested_authn_context_str = ""
-        if security["requestedAuthnContext"] is not False:
+        if not security["requestedAuthnContext"]:
             authn_comparison = security["requestedAuthnContextComparison"]
 
-            if security["requestedAuthnContext"] is True:
+            if isinstance(security["requestedAuthnContext"], list):
+                requested_authn_context_str = '     <samlp:RequestedAuthnContext Comparison="%s">' % authn_comparison
+                for authn_context in security["requestedAuthnContext"]:
+                    requested_authn_context_str += "<saml:AuthnContextClassRef>%s</saml:AuthnContextClassRef>" % authn_context
+                requested_authn_context_str += "    </samlp:RequestedAuthnContext>"
+
+            else:
                 requested_authn_context_str = (
                     """    <samlp:RequestedAuthnContext Comparison="%s">
         <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef>
     </samlp:RequestedAuthnContext>"""
                     % authn_comparison
                 )
-            else:
-                requested_authn_context_str = '     <samlp:RequestedAuthnContext Comparison="%s">' % authn_comparison
-                for authn_context in security["requestedAuthnContext"]:
-                    requested_authn_context_str += "<saml:AuthnContextClassRef>%s</saml:AuthnContextClassRef>" % authn_context
-                requested_authn_context_str += "    </samlp:RequestedAuthnContext>"
+               
 
         attr_consuming_service_str = ""
         if "attributeConsumingService" in sp_data and sp_data["attributeConsumingService"]: