diff --git a/src/sync.cpp b/src/sync.cpp
index 94cac4fa8a7..0bb335dc8f7 100644
--- a/src/sync.cpp
+++ b/src/sync.cpp
@@ -92,7 +92,7 @@ LockData& GetLockData() {
     return lock_data;
 }
 
-static void potential_deadlock_detected(const LockPair& mismatch, const LockStack& s1, const LockStack& s2)
+[[noreturn]] static void potential_deadlock_detected(const LockPair& mismatch, const LockStack& s1, const LockStack& s2)
 {
     LogPrintf("POTENTIAL DEADLOCK DETECTED\n");
     LogPrintf("Previous lock order was:\n");
@@ -128,7 +128,7 @@ static void potential_deadlock_detected(const LockPair& mismatch, const LockStac
     throw std::logic_error(strprintf("potential deadlock detected: %s -> %s -> %s", mutex_b, mutex_a, mutex_b));
 }
 
-static void double_lock_detected(const void* mutex, const LockStack& lock_stack)
+[[noreturn]] static void double_lock_detected(const void* mutex, const LockStack& lock_stack)
 {
     LogPrintf("DOUBLE LOCK DETECTED\n");
     LogPrintf("Lock order:\n");