diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index 8f410c0f..b2da29ed 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -45,7 +45,7 @@ extern "C" {
 /* TODO: This random interface is stupid. What should a good value be? */
 #define RAND_MAX 32767
 
-#define MB_CUR_MAX 6
+#define MB_CUR_MAX 4
 
 typedef struct
 {