diff --git a/Tests/Unit/GNUmakefile b/Tests/Unit/GNUmakefile
index 6c93399e7..2c8b79a31 100644
--- a/Tests/Unit/GNUmakefile
+++ b/Tests/Unit/GNUmakefile
@@ -21,6 +21,7 @@ $(TEST_TOOL)_OBJC_FILES += \
 	\
 	TestSBJsonParser.m \
 	\
+	TestNGMimeAddressHeaderFieldGenerator.m \
 	TestNGMimeHeaderFieldGenerator.m \
 	TestNGMimeMessageGenerator.m \
 	\