diff --git a/utest.h b/utest.h
index 3ce307d..7f206af 100644
--- a/utest.h
+++ b/utest.h
@@ -1208,12 +1208,12 @@
         UTEST_CAST(utest_uint64_t, ran_tests), UTEST_CAST(utest_uint64_t, failed));
     for (index = 0; index < utest_state.tests_length; index++) {
       if (!utest_should_filter_test(filter, utest_state.tests[index].name)) {
-        fprintf(utest_state.output, "    <testcase name=\"%s\" status=\"run\" result=\"completed\" time=\"%" UTEST_PRId64 "ns\"",
-            utest_state.tests[index].name, utest_state.tests[index].ns);
+        fprintf(utest_state.output, "    <testcase name=\"%s\" status=\"run\" result=\"completed\" time=\"%f\"",
+            utest_state.tests[index].name, UTEST_CAST(double, utest_state.tests[index].ns) / 1000000000.0);
         if (utest_state.tests[index].iterations) {
-          fprintf(utest_state.output, " avg_time=\"%" UTEST_PRId64 "ns\" lowest_time=\"%" UTEST_PRId64 "ns\" highest_time=\"%"
+          fprintf(utest_state.output, " time=\"%f\" lowest_time=\"%" UTEST_PRId64 "ns\" highest_time=\"%"
               UTEST_PRId64 "ns\" std_deviation=\"%f\" confidence_interval=\"+-%f%%\"",
-              utest_state.tests[index].best_avg_ns, utest_state.tests[index].min_ns, utest_state.tests[index].max_ns,
+              UTEST_CAST(double, utest_state.tests[index].best_avg_ns) / 1000000000.0, utest_state.tests[index].min_ns, utest_state.tests[index].max_ns,
               utest_state.tests[index].best_deviation, utest_state.tests[index].best_confidence);
         }
         if (utest_state.tests[index].output) {