diff --git a/libraries/AP_Radio/AP_Radio_cypress.cpp b/libraries/AP_Radio/AP_Radio_cypress.cpp
index 3f55bf2e66..1d143ba7f3 100644
--- a/libraries/AP_Radio/AP_Radio_cypress.cpp
+++ b/libraries/AP_Radio/AP_Radio_cypress.cpp
@@ -1438,7 +1438,7 @@ void AP_Radio_cypress::dsm_choose_channel(void)
  */
 void AP_Radio_cypress::start_recv_bind(void)
 {
-    if (!dev->get_semaphore()->take(0)) {
+    if (!dev->get_semaphore()->take(HAL_SEMAPHORE_BLOCK_FOREVER)) {
         // shouldn't be possible
         return;
     }