diff --git a/openbsc/tests/testsuite.at b/openbsc/tests/testsuite.at
index 148b3d3..e54d4b5 100644
--- a/openbsc/tests/testsuite.at
+++ b/openbsc/tests/testsuite.at
@@ -34,6 +34,7 @@
 AT_SETUP([bsc-nat])
 AT_KEYWORDS([bsc-nat])
 AT_CHECK([test "$enable_nat_test" != no || exit 77])
+cp $abs_srcdir/bsc-nat/prefixes.csv .
 cp $abs_srcdir/bsc-nat/barr.cfg .
 cp $abs_srcdir/bsc-nat/barr_dup.cfg .
 cat $abs_srcdir/bsc-nat/bsc_nat_test.ok > expout