diff --git a/sources/generic/oof-example.fth b/sources/generic/oof-example.fth
index 2eba9dd..41d8e0a 100644
--- a/sources/generic/oof-example.fth
+++ b/sources/generic/oof-example.fth
@@ -1,6 +1,6 @@
 \ Mini OOF Example
 
-\needs class  INCLUDE" D:MINIOOF.F"
+\needs class  INCLUDE" D:MINIOOF.FTH"
 
 CR .( loading OOF Example )