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-rw-r--r--c_src/nif_helpers.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/c_src/nif_helpers.h b/c_src/nif_helpers.h
index 8c1cfa4..111ea84 100644
--- a/c_src/nif_helpers.h
+++ b/c_src/nif_helpers.h
@@ -125,7 +125,7 @@ void nif_destroy_main_thread(void*);
ERL_NIF_TERM nif_thread_cast(ErlNifEnv*, void (*f)(nif_thread_arg*), int a, ...);
ERL_NIF_TERM nif_thread_call(ErlNifEnv*, ERL_NIF_TERM (*f)(ErlNifEnv*, nif_thread_arg*), int a, ...);
-#define NIF_CAST_HANDLER(f) void f(nif_thread_arg* args)
-#define NIF_CALL_HANDLER(f) ERL_NIF_TERM f(ErlNifEnv* env, nif_thread_arg* args)
+#define NIF_CAST_HANDLER(f) static void f(nif_thread_arg* args)
+#define NIF_CALL_HANDLER(f) static ERL_NIF_TERM f(ErlNifEnv* env, nif_thread_arg* args)
#endif