diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 8279b157..a988f47b 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -15,7 +15,6 @@ add_executable(${JSON_UNITTEST_TARGET_NAME}
     "src/unit-concepts.cpp"
     "src/unit-constructor1.cpp"
     "src/unit-constructor2.cpp"
-    "src/unit-constructor3.cpp"
     "src/unit-convenience.cpp"
     "src/unit-conversions.cpp"
     "src/unit-deserialization.cpp"
@@ -36,6 +35,7 @@ add_executable(${JSON_UNITTEST_TARGET_NAME}
     "src/unit-regression.cpp"
     "src/unit-serialization.cpp"
     "src/unit-testsuites.cpp"
+    "src/unit-udt.cpp"
     "src/unit-unicode.cpp"
 )
 
diff --git a/test/src/unit-constructor3.cpp b/test/src/unit-udt.cpp
similarity index 100%
rename from test/src/unit-constructor3.cpp
rename to test/src/unit-udt.cpp