diff --git a/tests/carddatabase/CMakeLists.txt b/tests/carddatabase/CMakeLists.txt
index 9797d27cf..11b1ff2a8 100644
--- a/tests/carddatabase/CMakeLists.txt
+++ b/tests/carddatabase/CMakeLists.txt
@@ -19,6 +19,7 @@ add_executable(
   ${MOCKS_SOURCES}
   ${VERSION_STRING_CPP}
   ../../cockatrice/src/card/card_info.cpp
+    ../../cockatrice/src/card/card_relation.cpp
   ../../cockatrice/src/card/exact_card.cpp
   ../../cockatrice/src/database/card_database.cpp
   ../../cockatrice/src/database/card_database_loader.cpp
@@ -35,6 +36,7 @@ add_executable(
   ${MOCKS_SOURCES}
   ${VERSION_STRING_CPP}
   ../../cockatrice/src/card/card_info.cpp
+    ../../cockatrice/src/card/card_relation.cpp
   ../../cockatrice/src/card/exact_card.cpp
   ../../cockatrice/src/database/card_database.cpp
   ../../cockatrice/src/database/card_database_loader.cpp