diff --git a/creole.c b/creole.c
index 0ade012..d053437 100644
--- a/creole.c
+++ b/creole.c
@@ -14,10 +14,12 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
 
 #ifndef CREOLE_TEST
 # include <zephyr/kernel.h>
+# include <zephyr/logging/log.h>
 # include <zephyr/sys_clock.h>
 # include "access.h"
 # include "control_loop_cmds.h"
 # include "sock.h"
+LOG_MODULE_REGISTER(creole, 4);
 #endif
 
 #include "creole.h"
@@ -597,7 +599,7 @@ upsilon_sendval(struct creole_env *env, creole_word num)
 static creole_word
 upsilon_senddat(struct creole_env *env, creole_word db)
 {
-#define SENDDAT_BUFLEN 128
+#define SENDDAT_BUFLEN 1024
 	char buf[SENDDAT_BUFLEN];
 	struct bufptr bp = {buf, 0};
 	struct creole_word w;
@@ -608,6 +610,9 @@ upsilon_senddat(struct creole_env *env, creole_word db)
 			return -EINVAL;
 		buf[bp.left++] = w.word;
 	}
+	if (r.left != 0) {
+		return -E2BIG;
+	}
 
 	return sock_write_buf(env->fd, &bp);
 }