diff --git a/man/zip_source_file.html b/man/zip_source_file.html
index 7344fa7bb..00ba76248 100644
--- a/man/zip_source_file.html
+++ b/man/zip_source_file.html
@@ -94,7 +94,7 @@ <h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIP
     <a class="Xr" href="zip_close.html">zip_close(3)</a>).</p>
 <p class="Pp"><code class="Nm">libzip</code> can do various optimizations if the
     size of a source is known when it's created, so
-    <code class="Dv">ZIP_LENGTH_TO_END</code> is preferrable. If you deal with
+    <code class="Dv">ZIP_LENGTH_TO_END</code> is preferable. If you deal with
     files that are likely to change while you are processing them, you can use
     the less efficient <code class="Dv">ZIP_LENGTH_UNCHECKED</code>.</p>
 <p class="Pp">If the file supports seek, the source can be used to open a zip
diff --git a/man/zip_source_file.man b/man/zip_source_file.man
index c74837eb6..586fb0761 100644
--- a/man/zip_source_file.man
+++ b/man/zip_source_file.man
@@ -97,7 +97,7 @@ zip_close(3)).
 can do various optimizations if the size of a source is known when
 it's created, so
 \fRZIP_LENGTH_TO_END\fR
-is preferrable.
+is preferable.
 If you deal with files that are likely to change while you are
 processing them, you can use the less efficient
 \fRZIP_LENGTH_UNCHECKED\fR.