diff --git a/src/Datapoint/ConversionHelpers.cpp b/src/Datapoint/ConversionHelpers.cpp
index 930a2c9..583f6df 100644
--- a/src/Datapoint/ConversionHelpers.cpp
+++ b/src/Datapoint/ConversionHelpers.cpp
@@ -94,7 +94,7 @@ std::size_t decodeSchedule(const uint8_t* data, std::size_t len, char* output, s
       hour = 0;
       minutes = 0;
     }
-    int result = snprintf(&output[pos], maxLen - result, "%u.02:%u.02", hour, minutes);
+    int result = snprintf(&output[pos], maxLen - pos, "%u.02:%u.02", hour, minutes);
     if (result < 0) return 0;
     pos += result;
     if (i < 7) {
diff --git a/test/test_Datapoint/test_Datapoint.cpp b/test/test_Datapoint/test_Datapoint.cpp
index dbbde68..a3d7fbb 100644
--- a/test/test_Datapoint/test_Datapoint.cpp
+++ b/test/test_Datapoint/test_Datapoint.cpp
@@ -204,7 +204,7 @@ void test_COPEncode() {
   TEST_ASSERT_EQUAL_HEX8_ARRAY(expected, buffer, len);
 }
 
-void test_Schedule() {
+void test_ScheduleEncode() {
   const char* schedule = "7:30 08:30 16:20 23:10";
   const uint8_t expected[] = {0x3B, 0x43, 0x82, 0xB9, 0x00, 0x00, 0x00, 0x00};
   const size_t numSchedules = 2;
@@ -235,6 +235,6 @@ int main() {
   RUN_TEST(test_CountShortEncode);
   RUN_TEST(test_COPDecode);
   RUN_TEST(test_COPEncode);
-  RUN_TEST(test_Schedule);
+  RUN_TEST(test_ScheduleEncode);
   return UNITY_END();
 }
\ No newline at end of file