diff --git a/furi/core/semaphore.c b/furi/core/semaphore.c
index d05b9bf09..513c3a122 100644
--- a/furi/core/semaphore.c
+++ b/furi/core/semaphore.c
@@ -104,6 +104,8 @@ FuriStatus furi_semaphore_release(FuriSemaphore* instance) {
 
     stat = FuriStatusOk;
 
+    FURI_CRITICAL_ENTER();
+
     if(FURI_IS_IRQ_MODE()) {
         yield = pdFALSE;
 
@@ -123,6 +125,8 @@ FuriStatus furi_semaphore_release(FuriSemaphore* instance) {
         furi_event_loop_link_notify(&instance->event_loop_link, FuriEventLoopEventIn);
     }
 
+    FURI_CRITICAL_EXIT();
+
     return stat;
 }