diff --git a/test/validate-pdbx-test.cpp b/test/validate-pdbx-test.cpp
index 605ec77..2b5f3ff 100644
--- a/test/validate-pdbx-test.cpp
+++ b/test/validate-pdbx-test.cpp
@@ -296,13 +296,3 @@ TEST_CASE("brak")
 	auto f = cif::pdb::read(gTestDir / "brak.pdb");
 	CHECK(f.is_valid());
 }
-
-TEST_CASE("extended-dictionary-1")
-{
-	cif::add_file_resource("dssp-extension.dic", gTestDir / "dssp-extension.dic");
-
-	cif::VERBOSE = 2;
-
-	auto f = cif::pdb::read(gTestDir / "1cbs-dssp.cif");
-	CHECK(f.is_valid());
-}
\ No newline at end of file