diff --git a/src/stdlib/SDL_iconv.c b/src/stdlib/SDL_iconv.c
index b2ce35b59..77e83a465 100644
--- a/src/stdlib/SDL_iconv.c
+++ b/src/stdlib/SDL_iconv.c
@@ -37,7 +37,7 @@
    iconv() may or may not use const char ** for the inbuf param.
    If we get this wrong, it's just a warning, so no big deal.
 */
-#if defined(_XGP6) || defined(__APPLE__) || \
+#if defined(_XGP6) || defined(__APPLE__) || defined(__RISCOS__) || \
     defined(__EMSCRIPTEN__) || \
     (defined(__GLIBC__) && ((__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)) || \
     (defined(_NEWLIB_VERSION)))