diff --git a/src/testdir/Make_os2.mak b/src/testdir/Make_os2.mak
index 7af826d..7e37df7 100644
--- a/src/testdir/Make_os2.mak
+++ b/src/testdir/Make_os2.mak
@@ -35,7 +35,7 @@
 		test81.out test82.out test83.out test84.out test88.out \
 		test89.out test90.out test91.out test92.out test93.out \
 		test94.out test95.out test96.out test98.out test99.out \
-		test100.out test101.out test102.out test103.out
+		test100.out test101.out test102.out test103.out test104.out
 
 .SUFFIXES: .in .out