diff --git a/firmware/targets/f7/furi_hal/furi_hal_interrupt.c b/firmware/targets/f7/furi_hal/furi_hal_interrupt.c
index 9f4d4331..c508dac7 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_interrupt.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_interrupt.c
@@ -128,14 +128,13 @@ void furi_hal_interrupt_set_isr_ex(
     FuriHalInterruptISR isr,
     void* context) {
     furi_check(index < FuriHalInterruptIdMax);
-    furi_check(priority < 15);
+    furi_check(priority <= 15);
 
     if(isr) {
         // Pre ISR set
         furi_check(furi_hal_interrupt_isr[index].isr == NULL);
     } else {
         // Pre ISR clear
-        furi_check(furi_hal_interrupt_isr[index].isr != NULL);
         furi_hal_interrupt_disable(index);
         furi_hal_interrupt_clear_pending(index);
     }
diff --git a/furi/core/check.c b/furi/core/check.c
index c5c4ef1a..f7dcfc59 100644
--- a/furi/core/check.c
+++ b/furi/core/check.c
@@ -36,7 +36,7 @@ PLACE_IN_SECTION("MB_MEM2") uint32_t __furi_check_registers[13] = {0};
  * 
  */
 #define RESTORE_REGISTERS_AND_HALT_MCU(debug)           \
-    register const bool r0 asm("r0") = debug;           \
+    register bool r0 asm("r0") = debug;                 \
     asm volatile("cbnz  r0, with_debugger%=         \n" \
                  "ldr   r12, =__furi_check_registers\n" \
                  "ldm   r12, {r0-r11}               \n" \