Fix test error

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/tests/suites/test_suite_constant_time.function b/tests/suites/test_suite_constant_time.function
index b9a78c8..3127365 100644
--- a/tests/suites/test_suite_constant_time.function
+++ b/tests/suites/test_suite_constant_time.function
@@ -119,8 +119,8 @@
 {
     mbedtls_ct_condition_t c = mbedtls_ct_bool(cond);
 
-    mbedtls_ct_uint_t expected = c ? t : f;
-    mbedtls_ct_uint_t expected0 = c ? t : 0;
+    int expected = c ? t : f;
+    int expected0 = c ? t : 0;
 
     TEST_CF_SECRET(&c, sizeof(c));
     TEST_CF_SECRET(&t, sizeof(t));