diff --git a/src/random.cpp b/src/random.cpp
index 67efc7d94..b0044af51 100644
--- a/src/random.cpp
+++ b/src/random.cpp
@@ -39,10 +39,10 @@
 #include <openssl/err.h>
 #include <openssl/rand.h>
 
-static void RandFailure()
+[[noreturn]] static void RandFailure()
 {
     LogPrintf("Failed to read randomness, aborting\n");
-    abort();
+    std::abort();
 }
 
 static inline int64_t GetPerformanceCounter()
diff --git a/src/test/test_bitcoin_main.cpp b/src/test/test_bitcoin_main.cpp
index 34beef553..b556c953b 100644
--- a/src/test/test_bitcoin_main.cpp
+++ b/src/test/test_bitcoin_main.cpp
@@ -10,14 +10,14 @@
 
 std::unique_ptr<CConnman> g_connman;
 
-void Shutdown(void* parg)
+[[noreturn]] void Shutdown(void* parg)
 {
-  exit(EXIT_SUCCESS);
+  std::exit(EXIT_SUCCESS);
 }
 
-void StartShutdown()
+[[noreturn]] void StartShutdown()
 {
-  exit(EXIT_SUCCESS);
+  std::exit(EXIT_SUCCESS);
 }
 
 bool ShutdownRequested()