diff --git a/libc/runtime/zipos-open.c b/libc/runtime/zipos-open.c
index 0d3c7780c..b24153ea0 100644
--- a/libc/runtime/zipos-open.c
+++ b/libc/runtime/zipos-open.c
@@ -51,7 +51,7 @@
 #include "libc/thread/tls.h"
 #include "libc/zip.internal.h"
 
-#define MAX_REFS (INT_MAX >> 1)
+#define MAX_REFS SSIZE_MAX
 
 static char *__zipos_mapend;
 static size_t __zipos_maptotal;
diff --git a/libc/runtime/zipos.internal.h b/libc/runtime/zipos.internal.h
index 0cd1979bf..30fbf9adc 100644
--- a/libc/runtime/zipos.internal.h
+++ b/libc/runtime/zipos.internal.h
@@ -21,7 +21,7 @@ struct ZiposHandle {
   size_t size;
   size_t mapsize;
   size_t cfile;
-  _Atomic(int) refs;
+  _Atomic(size_t) refs;
   _Atomic(size_t) pos;
   uint8_t *mem;
   uint8_t data[];