diff --git a/tests/regress.sh b/tests/regress.sh
index 37c665c..62abe21 100755
--- a/tests/regress.sh
+++ b/tests/regress.sh
@@ -31,7 +31,8 @@ tests_init \
 	explicit_sysroot \
 	empty_tuple \
 	solver_requires_private_debounce \
-	billion_laughs
+	billion_laughs \
+	maximum_package_depth_off_by_one
 
 #	sysroot_munge \
 
@@ -273,3 +274,9 @@ billion_laughs_body()
 	atf_check -o inline:"warning: truncating very long variable to 64KB\nwarning: truncating very long variable to 64KB\nwarning: truncating very long variable to 64KB\nwarning: truncating very long variable to 64KB\nwarning: truncating very long variable to 64KB\n" \
 		pkgconf --with-path="${selfdir}/lib1" --validate billion-laughs
 }
+
+maximum_package_depth_off_by_one_body()
+{
+	atf_check -o inline:"1.2.3\n" \
+		pkgconf --with-path="${selfdir}/lib1" --modversion foo bar baz
+}