diff --git a/doc/gf-course.html b/doc/gf-course.html
index ba0a59a6c..7a432ad7c 100644
--- a/doc/gf-course.html
+++ b/doc/gf-course.html
@@ -7,7 +7,7 @@
 <P ALIGN="center"><CENTER><H1>Graduate Course: GF (Grammatical Framework)</H1>
 <FONT SIZE="4">
 <I>Aarne Ranta</I><BR>
-Wed Sep 12 14:05:14 2007
+Wed Sep 12 14:08:53 2007
 </FONT></CENTER>
 
 <P>
@@ -84,7 +84,7 @@ Building of Gothenburg University ("Humanisten").
 The structure of each lecture will be the following:
 </P>
 <UL>
-<LI>ca. 70h lecture, going through the book
+<LI>ca. 70min lecture, going through the book
 <LI>ca. 20min work on computer, individually or in pairs
 </UL>
 
diff --git a/doc/gf-course.txt b/doc/gf-course.txt
index 53964deb3..41d6e13d0 100644
--- a/doc/gf-course.txt
+++ b/doc/gf-course.txt
@@ -49,7 +49,7 @@ Building of Gothenburg University ("Humanisten").
 
 
 The structure of each lecture will be the following:
-- ca. 70h lecture, going through the book
+- ca. 70min lecture, going through the book
 - ca. 20min work on computer, individually or in pairs