diff --git a/Stopwatch.lua b/Stopwatch.lua
index 957c5a5..01a226a 100644
--- a/Stopwatch.lua
+++ b/Stopwatch.lua
@@ -49,11 +49,11 @@ end
 function Stopwatch:getTime()
 	local timeDifference = nil;
 	--If start and stop has been called return the difference
-	if(startTime and stopTime) then
-		timeDifference = endTime - startTime;
+	if((self.startTime ~= nil) and (self.stopTime ~= nil)) then
+		timeDifference = self.stopTime - self.startTime;
 	--If start has been called but stop hasn't make the current time the end time. This simulates looking at a stopwatch while it is still running
-	elseif(startTime and not stopTime) then
-		timeDifference = os.time() - startTime;
+	elseif((self.startTime ~= nil) and (self.stopTime == nil)) then
+		timeDifference = os.time() - self.startTime;
 	--Otherwise return -1 as an error
 	else
 		timeDifference = -1;