diff --git a/debian/patches/lsi-test-args.patch b/debian/patches/lsi-test-args.patch
new file mode 100644
index 0000000..ef219b7
--- /dev/null
+++ b/debian/patches/lsi-test-args.patch
@@ -0,0 +1,21 @@
+Description: inject arguments in test script
+ The script expects a few arguments which are not passed by the testing
+ infrastructure.  This breaks the test.  The integer value in sys.argv[1] is
+ picked at random, but could be subject to discussion.
+Author: Étienne Mollier <etienne.mollier@mailoo.org>
+Forwarded: not-needed
+Last-Update: 2020-04-26
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- python-pauvre.orig/pauvre/lsi/test.py
++++ python-pauvre/pauvre/lsi/test.py
+@@ -10,6 +10,9 @@
+ 
+ ev = 0.00000001
+ 
++sys.argv[1] = '10'
++sys.argv[2] = None
++
+ def scale(i):
+ 	return float(i)
+ 
diff --git a/debian/patches/series b/debian/patches/series
index fd1ff6f..2de8f81 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -1,2 +1,3 @@
 2to3.patch
 typo-redwood.patch
+lsi-test-args.patch