diff --git a/src/protos/irc/client.rs b/src/protos/irc/client.rs
index a0accd0..7d73c87 100644
--- a/src/protos/irc/client.rs
+++ b/src/protos/irc/client.rs
@@ -1,5 +1,7 @@
 use super::*;
 
+use nom::combinator::opt;
+
 /// Client-to-server command.
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub enum ClientMessage {
@@ -121,8 +123,12 @@ fn client_message_user(input: &str) -> IResult<&str, ClientMessage> {
     let (input, _) = receiver(input)?;
     let (input, _) = tag(" ")(input)?;
     let (input, _) = receiver(input)?;
-    let (input, _) = tag(" :")(input)?;
-    let (input, realname) = token(input)?;
+    let (input, _) = tag(" ")(input)?;
+    let (input, r) = opt(tag(":"))(input)?;
+    let (input, realname) = match r {
+        Some(_) => token(input)?,
+        None => receiver(input)?,
+    };
 
     Ok((
         input,
@@ -156,8 +162,12 @@ fn client_message_who(input: &str) -> IResult<&str, ClientMessage> {
 fn client_message_topic(input: &str) -> IResult<&str, ClientMessage> {
     let (input, _) = tag("TOPIC ")(input)?;
     let (input, chan) = chan(input)?;
-    let (input, _) = tag(" :")(input)?;
-    let (input, topic) = token(input)?;
+    let (input, _) = tag(" ")(input)?;
+    let (input, r) = opt(tag(":"))(input)?;
+    let (input, topic) = match r {
+        Some(_) => token(input)?,
+        None => receiver(input)?,
+    };
 
     let topic = topic.into();
     Ok((input, ClientMessage::Topic { chan, topic }))
@@ -166,8 +176,12 @@ fn client_message_topic(input: &str) -> IResult<&str, ClientMessage> {
 fn client_message_part(input: &str) -> IResult<&str, ClientMessage> {
     let (input, _) = tag("PART ")(input)?;
     let (input, chan) = chan(input)?;
-    let (input, _) = tag(" :")(input)?;
-    let (input, message) = token(input)?;
+    let (input, _) = tag(" ")(input)?;
+    let (input, r) = opt(tag(":"))(input)?;
+    let (input, message) = match r {
+        Some(_) => token(input)?,
+        None => receiver(input)?,
+    };
 
     let message = message.into();
     Ok((input, ClientMessage::Part { chan, message }))
@@ -176,8 +190,12 @@ fn client_message_part(input: &str) -> IResult<&str, ClientMessage> {
 fn client_message_privmsg(input: &str) -> IResult<&str, ClientMessage> {
     let (input, _) = tag("PRIVMSG ")(input)?;
     let (input, recipient) = recipient(input)?;
-    let (input, _) = tag(" :")(input)?;
-    let (input, body) = token(input)?;
+    let (input, _) = tag(" ")(input)?;
+    let (input, r) = opt(tag(":"))(input)?;
+    let (input, body) = match r {
+        Some(_) => token(input)?,
+        None => receiver(input)?,
+    };
 
     let body = body.into();
     Ok((input, ClientMessage::PrivateMessage { recipient, body }))