diff --git a/pyext/Makefile.am b/pyext/Makefile.am
index 2b9f6ab..fef8d29 100755
--- a/pyext/Makefile.am
+++ b/pyext/Makefile.am
@@ -41,6 +41,7 @@ testscripts = ctools/tests/__init__.py \
               ../test/test_ctskymap.py \
               ../test/test_ctexpcube.py \
               ../test/test_ctpsfcube.py \
+              ../test/test_ctedispcube.py \
               ../test/test_ctbkgcube.py \
               ../test/test_ctmapcube.py \
               ../test/test_ctcubemask.py \