diff --git a/res/res_pjsip/security_events.c b/res/res_pjsip/security_events.c
index 0135d3351864988cb9fd3651fd60c5899656927d..238c1007dd86fb9d2df459c70e58fde0abf59e62 100644
--- a/res/res_pjsip/security_events.c
+++ b/res/res_pjsip/security_events.c
@@ -150,7 +150,7 @@ void ast_sip_report_auth_failed_challenge_response(struct ast_sip_endpoint *endp
 				.expected_response = "",
 		};
 
-	if (auth && !pj_strcmp2(&auth->scheme, "digest")) {
+	if (auth && !pj_strcmp2(&auth->scheme, "Digest")) {
 		ast_copy_pj_str(nonce, &auth->credential.digest.nonce, sizeof(nonce));
 		ast_copy_pj_str(response, &auth->credential.digest.response, sizeof(response));
 	}