diff --git a/src/display-3.lisp b/src/display-3.lisp
index 8957ce43d..64896d0a9 100644
--- a/src/display-3.lisp
+++ b/src/display-3.lisp
@@ -51,10 +51,10 @@
       (lem-core:attribute-value attribute :height))))
 
 (defun window-view-width (window)
-  (lem-if:view-width (lem:implementation) (lem-core:window-view window)))
+  (lem-if:view-width (lem-core:implementation) (lem-core:window-view window)))
 
 (defun window-view-height (window)
-  (lem-if:view-height (lem:implementation) (lem-core:window-view window)))
+  (lem-if:view-height (lem-core:implementation) (lem-core:window-view window)))
 
 (defun set-cursor-position (window x y)
   (%set-cursor-position (lem-core:implementation) window x y))