diff --git a/src/toxic.c b/src/toxic.c
index 35c59fb..4da2f68 100644
--- a/src/toxic.c
+++ b/src/toxic.c
@@ -102,7 +102,7 @@ static void init_signal_catchers(void)
     signal(SIGSEGV, catch_SIGSEGV);
 }
 
-void exit_toxic_success(Tox *m)
+noreturn void exit_toxic_success(Tox *m)
 {
     store_data(m, DATA_FILE);
     close_all_file_senders(m);
@@ -124,7 +124,7 @@ void exit_toxic_success(Tox *m)
     exit(EXIT_SUCCESS);
 }
 
-void exit_toxic_err(const char *errmsg, int errcode)
+noreturn void exit_toxic_err(const char *errmsg, int errcode)
 {
     if (errmsg == NULL)
         errmsg = "No error message";
diff --git a/src/toxic.h b/src/toxic.h
index 317c0d0..7109d25 100644
--- a/src/toxic.h
+++ b/src/toxic.h
@@ -36,6 +36,7 @@
 #endif
 
 #include <stdbool.h>
+#include <stdnoreturn.h>
 #include <curses.h>
 
 #include <tox/tox.h>
@@ -85,8 +86,8 @@ typedef enum _FATAL_ERRS {
    Uncomment if necessary */
 /* #define URXVT_FIX */
 
-void exit_toxic_success(Tox *m);
-void exit_toxic_err(const char *errmsg, int errcode);
+noreturn void exit_toxic_success(Tox *m);
+noreturn void exit_toxic_err(const char *errmsg, int errcode);
 
 int store_data(Tox *m, char *path);