diff --git a/src/modules/tm/doc/rpc.xml b/src/modules/tm/doc/rpc.xml
index d00ae09b73a..8f31ad34364 100644
--- a/src/modules/tm/doc/rpc.xml
+++ b/src/modules/tm/doc/rpc.xml
@@ -194,7 +194,7 @@
 		<function moreinfo="none">tm.clean</function>
 		</title>
 		<para>
-		Trigger an hard clean of expired transactions.
+		Trigger a hard clean of expired transactions.
 		</para>
 		<para>Parameters: </para>
 		<itemizedlist>
diff --git a/src/modules/tm/t_lookup.c b/src/modules/tm/t_lookup.c
index b33d276787c..b8da44dbc14 100644
--- a/src/modules/tm/t_lookup.c
+++ b/src/modules/tm/t_lookup.c
@@ -899,7 +899,7 @@ int t_lookup_request( struct sip_msg* p_msg , int leave_new_locked,
 			/* it is not an e2e ACK/200 -- perhaps it is
 			 * local negative case; in which case we will want
 			 * more elements to match: r-uri and via; allow
-			 * mismatching r-uri as an config option for broken
+			 * mismatching r-uri as a config option for broken
 			 * UACs */
 			if (cfg_get(tm, tm_cfg, ruri_matching) && !EQ_REQ_URI_LEN )
 				continue;
@@ -1938,7 +1938,7 @@ int t_unref( struct sip_msg* p_msg  )
 				LM_BUG("called w/ kr=REQ_ERR_DELAYED in failure"
 						" route for %p\n", T);
 			}else if (unlikely( kill_transaction(T, tm_error)<=0 )){
-				// could be a valid error, or due to a immediate CANCEL
+				// could be a valid error, or due to an immediate CANCEL
 				LM_WARN("generation of a delayed stateful reply"
 						" failed\n");
 				t_release_transaction(T);
diff --git a/src/modules/tm/t_reply.c b/src/modules/tm/t_reply.c
index f478da054b0..ea0cde2d566 100644
--- a/src/modules/tm/t_reply.c
+++ b/src/modules/tm/t_reply.c
@@ -22,7 +22,7 @@
 /** Defines:
  *           TM_ONREPLY_FINAL_DROP_OK - allows dropping the final reply
  *            from the tm onreply_routes, but comes with a small performance
- *            hit (extra unlock()/lock() for each final reply when a onreply
+ *            hit (extra unlock()/lock() for each final reply when an onreply
  *            route is set).
  */
 
@@ -2615,7 +2615,7 @@ int reply_received( struct sip_msg  *p_msg )
 #ifdef USE_DST_BLOCKLIST
 		/* add temporary to the blocklist the source of a 503 reply */
 		if ( (msg_status==503) && cfg_get(tm, tm_cfg, tm_blst_503) &&
-				/* check if the request sent on the branch had the the
+				/* check if the request sent on the branch had the
 				 * blst 503 ignore flags set or it was set in the onreply_r*/
 				should_blocklist_su(BLST_503, &p_msg->fwd_send_flags,
 										p_msg->rcv.proto, &p_msg->rcv.src_su)