diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index 7e49e0ba0..2f305e5ec 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -1739,12 +1739,11 @@ static inline unsigned int mbedtls_ssl_conf_get_ems_enforced(
  * This function must not be called multiple times without manually
  * inspecting and clearing ssl->pending_fatal_alert_msg in between.
  */
-MBEDTLS_ALWAYS_INLINE static inline int mbedtls_ssl_pend_fatal_alert(
+MBEDTLS_ALWAYS_INLINE static inline void mbedtls_ssl_pend_fatal_alert(
     mbedtls_ssl_context *ssl,
     unsigned char message )
 {
     ssl->pend_alert_msg = message;
-    return( 0 );
 }
 
 #endif /* ssl_internal.h */