1 files changed, 1 insertions, 1 deletions

diff --git a/gzguts.h b/gzguts.h
index d87659d..ca13f47 100644
--- a/gzguts.h
+++ b/gzguts.h
@@ -170,7 +170,7 @@ typedef struct {
     char *path;             /* path or fd for error messages */
     unsigned size;          /* buffer size, zero if not allocated yet */
     unsigned want;          /* requested buffer size, default is GZBUFSIZE */
-    unsigned char *in;      /* input buffer */
+    unsigned char *in;      /* input buffer (double-sized when writing) */
     unsigned char *out;     /* output buffer (double-sized when reading) */
     int direct;             /* 0 if processing gzip, 1 if transparent */
         /* just for reading */