diff --git a/src/test_unit/Makefile.am b/src/test_unit/Makefile.am
index 6c1ac15e..23957a31 100644
--- a/src/test_unit/Makefile.am
+++ b/src/test_unit/Makefile.am
@@ -22,9 +22,10 @@ noinst_PROGRAMS = test_unit
 test_unit_LDADD = $(top_builddir)/src/libFLAC/libFLAC.la -lm
 test_unit_SOURCES = \
 	bitbuffer.c \
+	main.c \
 	metadata.c \
 	metadata_manip.c \
 	metadata_object.c \
-	main.c \
+	metadata_utils.c \
 	bitbuffer.h \
 	metadata.h
diff --git a/src/test_unit/Makefile.lite b/src/test_unit/Makefile.lite
index 240a64b7..7d7c4818 100644
--- a/src/test_unit/Makefile.lite
+++ b/src/test_unit/Makefile.lite
@@ -27,7 +27,8 @@ OBJS = \
 	main.o \
 	metadata.o \
 	metadata_manip.o \
-	metadata_object.o
+	metadata_object.o \
+	metadata_utils.o
 
 include ../../build/exe.mk
 
diff --git a/src/test_unit/Makefile.vc b/src/test_unit/Makefile.vc
index 658cfaec..f7890a86 100644
--- a/src/test_unit/Makefile.vc
+++ b/src/test_unit/Makefile.vc
@@ -30,7 +30,8 @@ C_FILES= \
 	main.c \
 	metadata.c \
 	metadata_manip.c \
-	metadata_object.c
+	metadata_object.c \
+	metadata_utils.c
 
 OBJS= $(C_FILES:.c=.obj)