diff --git a/test/test_convert_time.c b/test/test_convert_time.c
index b68e9f2..e9e35b3 100644
--- a/test/test_convert_time.c
+++ b/test/test_convert_time.c
@@ -58,3 +58,10 @@ void test_convert_time_daysinyears(void){
     result = converter_days_to_years(365.0);
     TEST_ASSERT_EQUAL_DOUBLE(expectedResult, result);
 }
+
+void test_convert_time_yearsindays(void){
+    double expectedResult = 365.0;
+    double result;
+    result = converter_years_to_days(1.0);
+    TEST_ASSERT_EQUAL_DOUBLE(expectedResult, result);
+}
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