diff --git a/src/portable/chipidea/ci_hs/dcd_ci_hs.c b/src/portable/chipidea/ci_hs/dcd_ci_hs.c
index b9f6a8a7b..9ed75ffd9 100644
--- a/src/portable/chipidea/ci_hs/dcd_ci_hs.c
+++ b/src/portable/chipidea/ci_hs/dcd_ci_hs.c
@@ -388,7 +388,7 @@ TU_ATTR_ALWAYS_INLINE static inline void ep_ctrl_mask(volatile uint32_t *epctrl,
                                                       uint32_t or_mask) {
   uint32_t value = *epctrl;
   if (and_mask != 0) {
-    value &= (dir == TUSB_DIR_OUT) ? and_mask : (and_mask << 16u);
+    value &= (dir == TUSB_DIR_OUT) ? (and_mask | 0xFFFF0000u) : ((and_mask << 16u) | 0x0000FFFFu);
   }
   if (or_mask != 0) {
     value |= (dir == TUSB_DIR_OUT) ? or_mask : (or_mask << 16u);