diff --git a/scribblings/columns-pane.scrbl b/scribblings/columns-pane.scrbl
index d564a7e..6013364 100644
--- a/scribblings/columns-pane.scrbl
+++ b/scribblings/columns-pane.scrbl
@@ -44,7 +44,7 @@ See also @racket[pane%].
  Returns the currently set minimum width for the given column. 
 }
 
-@defmethod*[([(column-align (c column-index) [align <- (or/c 'left 'center 'right)])])]
+@defmethod*[([(column-align (c column-index) [align <- (or/c 'left 'center 'right)]) (or/c 'left 'center 'right)])]{
   Gets or sets the horizontal alignment of a given column c.
 
   Returns the currently set alignment.
@@ -52,7 +52,7 @@ See also @racket[pane%].
   Note. Use this right after declaring the columns pane and before adding any children. 
 }
 
-@defmethod*[([(column-keep-min-width (c column-index) [k (or/c #f #t)])])]
+@defmethod*[([(column-keep-min-width (c column-index) [k boolean]) boolean?])]{
   Gets or sets the keep minimal width parameter for a given column c. 
 
   Returns the currently set value. 
@@ -61,7 +61,6 @@ See also @racket[pane%].
   It will grow however, when needed. 
 }
 
-
 }
 
 @section{Example code}