diff --git a/manpages/nihtest-case.html b/manpages/nihtest-case.html
index 68fba15..90f551d 100644
--- a/manpages/nihtest-case.html
+++ b/manpages/nihtest-case.html
@@ -180,6 +180,10 @@ <h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIP
       expected output as provided by <code class="Ic">stdout</code> before
       comparing them. See <code class="Ic">stderr-replace</code> for
     details.</dd>
+  <dt><a class="permalink" href="#test-case-source"><code class="Ic" id="test-case-source">test-case-source</code></a>
+    <var class="Ar">filename</var></dt>
+  <dd>Use <var class="Ar">filename</var> to refer to test case in error
+      messages. This is useful if the test case is created by a script.</dd>
   <dt><a class="permalink" href="#working-directory"><code class="Ic" id="working-directory">working-directory</code></a>
     <var class="Ar">directory</var></dt>
   <dd>Run the program in the subdirectory <var class="Ar">directory</var> inside
diff --git a/manpages/nihtest-case.man b/manpages/nihtest-case.man
index 8dcd054..317c0a3 100644
--- a/manpages/nihtest-case.man
+++ b/manpages/nihtest-case.man
@@ -226,6 +226,12 @@ See
 \fBstderr-replace\fR
 for details.
 .TP 22n
+\fBtest-case-source\fR \fIfilename\fR
+Use
+\fIfilename\fR
+to refer to test case in error messages.
+This is useful if the test case is created by a script.
+.TP 22n
 \fBworking-directory\fR \fIdirectory\fR
 Run the program in the subdirectory
 \fIdirectory\fR