diff --git a/src/grib_io.c b/src/grib_io.c
index 5515f3555..30adcbd2a 100644
--- a/src/grib_io.c
+++ b/src/grib_io.c
@@ -904,7 +904,7 @@ static int read_any_gts(reader *r)
     unsigned long magic = 0;
     unsigned long start = 0x010d0d0a;  /* SOH CR CR LF */
     unsigned long theEnd = 0x0d0d0a03; /* CR CR LF ETX */
-    unsigned char tmp[128]={0,}; /* See ECC-735 */
+    unsigned char tmp[1024]={0,}; /* See ECC-735 */
     size_t message_size=0;
     size_t already_read=0;
     int i=0;