diff --git a/Userland/Applications/Spreadsheet/CMakeLists.txt b/Userland/Applications/Spreadsheet/CMakeLists.txt
index 73945a9a5f..50f0225d95 100644
--- a/Userland/Applications/Spreadsheet/CMakeLists.txt
+++ b/Userland/Applications/Spreadsheet/CMakeLists.txt
@@ -38,6 +38,7 @@ set(GENERATED_SOURCES
 serenity_app(Spreadsheet ICON app-spreadsheet)
 target_link_libraries(Spreadsheet LibGUI LibJS LibWeb)
 
-# FIXME: build these tests
-#serenity_test(Writers/Test/TestXSVWriter.cpp Spreadsheet)
-#serenity_test(Readers/Test/TestXSV.cpp Spreadsheet)
+serenity_test(Writers/Test/TestXSVWriter.cpp Spreadsheet)
+
+serenity_test(Readers/Test/TestXSV.cpp Spreadsheet)
+target_sources(TestXSV PRIVATE Readers/XSV.cpp)