diff --git a/src/intrin_portable.h b/src/intrin_portable.h
index 6b5a507..646ef75 100644
--- a/src/intrin_portable.h
+++ b/src/intrin_portable.h
@@ -72,7 +72,7 @@ void rx_set_double_precision();
 #endif
 
 #if !defined(RANDOMX_USE_X87)
-#define rx_set_double_precision
+#define rx_set_double_precision(x)
 #endif
 
 #ifdef __SSE2__