diff --git a/tests/validation/Validation.h b/tests/validation/Validation.h
index 43a90f3..993a3c3 100644
--- a/tests/validation/Validation.h
+++ b/tests/validation/Validation.h
@@ -181,6 +181,12 @@
         BOOST_TEST(same_coords != ref_max_loc.buffer() + max_count);
     }
 }
+
+/** Validate KeyPoint arrays.
+ *
+ * - All values should match
+ */
+void validate(IArray<KeyPoint> &target, IArray<KeyPoint> &ref);
 } // namespace validation
 } // namespace test
 } // namespace arm_compute