diff --git a/libc/fmt/formatbinary64.c b/libc/fmt/formatbinary64.c
index bd8e75def..ee94b4a43 100644
--- a/libc/fmt/formatbinary64.c
+++ b/libc/fmt/formatbinary64.c
@@ -21,7 +21,7 @@
 
 static inline int PickGoodWidth(unsigned x) {
   if (x < 16) {
-    if (x < 2) return 0;
+    if (x < 2) return 1;
     if (x < 8) return 7;
     return 15;
   } else {