1 files changed, 4 insertions, 2 deletions

diff --git a/apps/plugins/alpine_cdc.c b/apps/plugins/alpine_cdc.c
index 494fa17842..73bc49ff00 100644
--- a/apps/plugins/alpine_cdc.c
+++ b/apps/plugins/alpine_cdc.c
@@ -231,11 +231,13 @@ void timer_set_mode(int mode)
 
     if (mode == TM_RX_TIMEOUT)
     {
-        rb->timer_register(1, NULL, gTimer.timeout, 11, timer4_isr IF_COP(, CPU));
+        rb->timer_register(1, NULL, gTimer.timeout, timer4_isr IF_COP(, CPU));
+        IPRD = (IPRD & 0xFF0F) | 11 << 4;  /* interrupt priority */
     }
     else if (mode == TM_TRANSMIT)
     {
-        rb->timer_register(1, NULL, gTimer.transmit, 14, timer4_isr IF_COP(, CPU));
+        rb->timer_register(1, NULL, gTimer.transmit, timer4_isr IF_COP(, CPU));
+        IPRD = (IPRD & 0xFF0F) | 14 << 4;  /* interrupt priority */
     }
     else
     {