diff --git a/doc/man/sieve-test.1 b/doc/man/sieve-test.1
index 437fbd28bb058ca2fe817c024ec550382305e149..eabefc6841e17da59d186d003e5ac8c1d1f10743 100644
--- a/doc/man/sieve-test.1
+++ b/doc/man/sieve-test.1
@@ -84,7 +84,8 @@ allowed and the specified scripts are executed sequentially in the order specifi
 line.
 .TP
 \fB-t\fP
-Enable simple trace debugging; prints all encountered byte code instructions to \fBstdout\fP.
+Enable simple trace debugging; prints all encountered byte code instructions to \fBstdout\fP. This is
+currently only intelligible for developers.
 .TP
 \fB-x\fP "\fIextension extension ...\fP"
 Set the available extensions. The option's parameter is a space-separated list of the active