diff --git a/tests/testutils/UnitTest.h b/tests/testutils/UnitTest.h
index f4bb339ee..f9d69829b 100644
--- a/tests/testutils/UnitTest.h
+++ b/tests/testutils/UnitTest.h
@@ -63,8 +63,6 @@ typedef std::vector<OCIOTestRcPtr> UnitTests;
 
 UnitTests & GetUnitTests();
 
-extern int unit_test_failures;
-
 struct AddTest
 {
     explicit AddTest(const OCIOTestRcPtr & test)