diff --git a/sipgen/gencode.c b/sipgen/gencode.c
index f7d239e..35e3784 100644
--- a/sipgen/gencode.c
+++ b/sipgen/gencode.c
@@ -2324,12 +2324,18 @@ static void generateModInitStart(moduleDef *mod, int gen_c, FILE *fp)
 "#define SIP_MODULE_RETURN(r)    return\n"
 "#endif\n"
 "\n"
+"#if (defined(__GNUC__) && __GNUC__ >= 4) || defined(__clang__)\n"
+"#pragma GCC visibility push(default)\n"
+"#endif\n"
 "#if defined(SIP_STATIC_MODULE)\n"
 "%sSIP_MODULE_TYPE SIP_MODULE_ENTRY()\n"
 "#else\n"
 "PyMODINIT_FUNC SIP_MODULE_ENTRY()\n"
 "#endif\n"
 "{\n"
+"#if (defined(__GNUC__) && __GNUC__ >= 4) || defined(__clang__)\n"
+"#pragma GCC visibility pop\n"
+"#endif\n"
         , mod->name
         , mod->name
         , (gen_c ? "" : "extern \"C\" "));