1 files changed, 2 insertions, 0 deletions
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 2546daade5..47e53dceeb 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -3016,6 +3016,8 @@ gzreader_gets(int argc, VALUE *argv, VALUE obj)
     if (NIL_P(rs)) {
 	dst = gzfile_read_all(gz);
 	if (RSTRING_LEN(dst) != 0) gz->lineno++;
+	else
+	    return Qnil;
 	return dst;
     }