diff --git a/statusbar.c b/statusbar.c
index e8cc3b8ea..f8af1d0db 100644
--- a/statusbar.c
+++ b/statusbar.c
@@ -484,7 +484,7 @@ luaA_statusbar_remove(lua_State *L)
  * \param L The Lua VM state.
  *
  * \luastack
- * \lparam A table with at least a name attribute. Optionnaly defined values are:
+ * \lparam A table with at least a name attribute. Optionaly defined values are:
  * position, align, fg, bg, width and height.
  * \lreturn A brand new statusbar.
  */
diff --git a/tag.c b/tag.c
index 9bf97fb44..485260d73 100644
--- a/tag.c
+++ b/tag.c
@@ -339,7 +339,7 @@ luaA_tag_geti(lua_State *L)
  *
  * \luastack
  * \lparam A table with at least a name attribute.
- * Optionnal attributes are: mwfact, ncol, nmaster and layout.
+ * Optional attributes are: mwfact, ncol, nmaster and layout.
  * \lreturn A new tag object.
  */
 static int
diff --git a/widget.c b/widget.c
index 37daf3c6e..e6d8b0f0f 100644
--- a/widget.c
+++ b/widget.c
@@ -299,7 +299,7 @@ widget_invalidate_bywidget(widget_t *widget)
  * \param L The Lua VM state.
  *
  * \luastack
- * \lparam A table with at least a name and a type value. Optionnal attributes
+ * \lparam A table with at least a name and a type value. Optional attributes
  * are: align.
  * \lreturn A brand new widget.
  */