diff --git a/winpr/include/winpr/platform.h b/winpr/include/winpr/platform.h
index a8119fab6..e95f82efa 100644
--- a/winpr/include/winpr/platform.h
+++ b/winpr/include/winpr/platform.h
@@ -76,7 +76,9 @@
 #endif
 
 #if defined(WINPR_DEFINE_ATTR_NODISCARD)
-#if defined(__clang__)
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201904L)
+#define WINPR_ATTR_NODISCARD [[nodiscard]]
+#elif defined(__clang__)
 #define WINPR_ATTR_NODISCARD __attribute__((warn_unused_result))
 #elif defined(__GNUC__) && (__GNUC__ >= 7)
 #define WINPR_ATTR_NODISCARD __attribute__((warn_unused_result))