diff --git a/include/begin_code.h b/include/begin_code.h
index 51f7b26403..a9c88be3e5 100644
--- a/include/begin_code.h
+++ b/include/begin_code.h
@@ -172,7 +172,7 @@
     (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202000L)
 #define SDL_FALLTHROUGH [[fallthrough]]
 #else
-#if defined(__has_attribute)
+#if defined(__has_attribute) && !defined(__SUNPRO_C) && !defined(__SUNPRO_CC)
 #define SDL_HAS_FALLTHROUGH __has_attribute(__fallthrough__)
 #else
 #define SDL_HAS_FALLTHROUGH 0