tbf: Fix wrong verb used in log message

Change-Id: Id9f8df9a5c0e0f88a811c5d7f06821cb4f30ab93
diff --git a/src/tbf.cpp b/src/tbf.cpp
index fde44ba..28e24b8 100644
--- a/src/tbf.cpp
+++ b/src/tbf.cpp
@@ -932,7 +932,7 @@
 	LOGP(DTBF, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++\n");
 	rc = encode_gsm_rlcmac_downlink(&bv, mac_control_block);
 	if (rc < 0) {
-		LOGP(DTBF, LOGL_ERROR, "Decoding of Packet Downlink Ass failed (%d)\n", rc);
+		LOGP(DTBF, LOGL_ERROR, "Encoding of Packet Downlink Ass failed (%d)\n", rc);
 		goto free_ret;
 	}
 	LOGP(DTBF, LOGL_DEBUG, "------------------------- TX : Packet Downlink Assignment -------------------------\n");