diff --git a/tests/carddatabase/CMakeLists.txt b/tests/carddatabase/CMakeLists.txt
index fde63b919..fc88e35e0 100644
--- a/tests/carddatabase/CMakeLists.txt
+++ b/tests/carddatabase/CMakeLists.txt
@@ -20,6 +20,7 @@ add_executable(
   ${VERSION_STRING_CPP}
   ../../cockatrice/src/card/card_info.cpp
   ../../cockatrice/src/card/card_relation.cpp
+  ../../cockatrice/src/card/card_set.cpp
   ../../cockatrice/src/card/exact_card.cpp
   ../../cockatrice/src/card/printing_info.cpp
   ../../cockatrice/src/database/card_database.cpp