diff --git a/tests/blackbox-segfault.sh b/tests/blackbox-segfault.sh
index eebfafc..0e1c47c 100755
--- a/tests/blackbox-segfault.sh
+++ b/tests/blackbox-segfault.sh
@@ -1,18 +1,26 @@
 #!/bin/sh
 #
 # create a normal blackbox
 rm -f crash-test-dummy.fdata
 ./crash_test_dummy
 
 . ./test.conf
 
+# first test that reading the valid
+# blackbox data actually works.
+../tools/qb-blackbox crash-test-dummy.fdata
+if [ $? -ne 0 ]; then
+	exit 1
+fi
+
+
 for i in $(seq $NUM_BB_TESTS)
 do
     rm -f butchered_blackbox.fdata
     echo " ==== Corrupt blackbox test $i/$NUM_BB_TESTS ===="
     ./file_change_bytes -i crash-test-dummy.fdata -o butchered_blackbox.fdata -n 1024
     ../tools/qb-blackbox butchered_blackbox.fdata
     [ $? -gt 127 ] && exit 1 || true
 done
 
 exit 0