diff --git a/libc/stdio/vcscanf.c b/libc/stdio/vcscanf.c
index 1fc4f44df..e0b24bfd1 100644
--- a/libc/stdio/vcscanf.c
+++ b/libc/stdio/vcscanf.c
@@ -62,6 +62,7 @@ int __vcscanf(int callback(void *),    //
   } *freeme = NULL;
   unsigned char *buf = NULL;
   size_t bufsize;
+  size_t bufcur;
   const unsigned char *p = (const unsigned char *)fmt;
   int *n_ptr;
   int items = 0;