diff --git a/man/foreman.1 b/man/foreman.1
index cdc155ba..1cbd565b 100644
--- a/man/foreman.1
+++ b/man/foreman.1
@@ -46,10 +46,6 @@ Specify an alternate Procfile to load, implies \fB\-d\fR at the Procfile root\.
 \fB\-p\fR, \fB\-\-port\fR
 Specify which port to use as the base for this application\. Should be a multiple of 1000\.
 .
-.TP
-\fB\-t\fR, \fB\-\-tmux\fR
-Runs the processes in a tmux session\. Creates one window for each process and an extra window containing the output of each window (requires gawk)\.
-.
 .P
 \fBforeman run\fR is used to run one\-off commands using the same environment as your defined processes\.
 .
diff --git a/man/foreman.1.ronn b/man/foreman.1.ronn
index 32a0a74a..e299f028 100644
--- a/man/foreman.1.ronn
+++ b/man/foreman.1.ronn
@@ -40,10 +40,6 @@ The following options control how the application is run:
     Specify which port to use as the base for this application. Should be
     a multiple of 1000.
 
-  * `-t`, `--tmux`:
-    Runs the processes in a tmux session. Creates one window for each process
-    and an extra window containing the output of each window (requires gawk).
-
 `foreman run` is used to run one-off commands using the same environment
 as your defined processes.