diff --git a/os/sb/host/sb.h b/os/sb/host/sb.h
index 9ce716540..14885e728 100644
--- a/os/sb/host/sb.h
+++ b/os/sb/host/sb.h
@@ -325,14 +325,6 @@ struct sb_class {
    * @brief   Reference to sh SB thread while waiting for VRQs.
    */
   thread_reference_t            vrq_trp;
-  /**
-   * @brief   NVIC ISER to be updated on VRQ exit or NULL.
-   */
-  uint32_t                      *vrq_nvic_iser;
-  /**
-   * @brief   NVIC ISER mask to be applied on VRQ exit.
-   */
-  uint32_t                      vrq_nvic_mask;
 #endif
 #if (SB_CFG_ENABLE_VFS == TRUE) || defined(__DOXYGEN__)
   /**
diff --git a/os/sb/host/sbvrq.c b/os/sb/host/sbvrq.c
index c8cc2bfeb..45ca933b8 100644
--- a/os/sb/host/sbvrq.c
+++ b/os/sb/host/sbvrq.c
@@ -365,11 +365,6 @@ void sb_fastc_vrq_return(struct port_extctx *ectxp) {
   sb_class_t *sbp = (sb_class_t *)chThdGetSelfX()->ctx.syscall.p;
   sb_vrqmask_t active_mask;
 
-  /* Checking if there are IRQs to be re-enabled on VRQ exit.*/
-  if (sbp->vrq_nvic_iser != NULL) {
-    *sbp->vrq_nvic_iser = sbp->vrq_nvic_mask;
-  }
-
   /* Discarding the return current context, returning on the previous one.
      TODO: Check for overflows????*/
   ectxp++;