diff --git a/debian/rules b/debian/rules
index 84725b2e0a0d3e9758db096fc5071f0bd7528d31..c7926ecaf42d239b64a1f97d836325b11ae21bed 100755
--- a/debian/rules
+++ b/debian/rules
@@ -79,5 +79,8 @@ override_dh_auto_build-indep:
 override_dh_strip:
 	dh_strip -a --dbg-package=libvisp2.8-dbg
 
+# Parallelism is disabled in tests as some cannot run at the same
+# time
 override_dh_auto_test:
-	export VISP_INPUT_IMAGE_PATH=/usr/share/visp-images-data/ && dh_auto_test
+	export VISP_INPUT_IMAGE_PATH=/usr/share/visp-images-data/ \
+	 && dh_auto_test -- -j1