diff --git a/man/man1/helmert3d.1 b/man/man1/helmert3d.1
index 564e077..75cb531 100644
--- a/man/man1/helmert3d.1
+++ b/man/man1/helmert3d.1
@@ -37,7 +37,9 @@ helmert parameter file format:
  s
 
 .SH EXAMPLE
-helmert3d /usr/local/share/helmparms3d/testpoints_src.txt testparms.txt
+export EXAMP=/usr/local/share/helmparms3d
+
+helmert3d $EXAMP/testpoints_src.txt testparms.txt
 
 .SH COPYRIGHT
 helmert3d:
diff --git a/man/man1/helmparms3d.1 b/man/man1/helmparms3d.1
index abe1d70..c9ea477 100644
--- a/man/man1/helmparms3d.1
+++ b/man/man1/helmparms3d.1
@@ -37,7 +37,9 @@ helmert parameter file format:
  s
 
 .SH EXAMPLE
-helmparms3d /usr/local/share/helmparms3d/testpoints_src.txt /usr/local/share/helmparms3d/testpoints_dest.txt testparms.txt
+export EXAMP=/usr/local/share/helmparms3d
+
+helmparms3d $EXAMP/testpoints_src.txt $EXAMP/testpoints_dest.txt testparms.txt
 
 .SH COPYRIGHT
 helmparms3d: