diff --git a/tests/data_files/test-int-ca3-badsign.crt b/tests/data_files/test-int-ca3-badsign.crt
new file mode 100644
index 0000000..2087056
--- /dev/null
+++ b/tests/data_files/test-int-ca3-badsign.crt
@@ -0,0 +1,12 @@
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