diff --git a/src/de/dhbwstuttgart/logger/Logger.java b/src/de/dhbwstuttgart/logger/Logger.java
index 64836c07..c1bbd93e 100755
--- a/src/de/dhbwstuttgart/logger/Logger.java
+++ b/src/de/dhbwstuttgart/logger/Logger.java
@@ -127,11 +127,11 @@ class LogHistory extends ArrayList<LogLine>{
 	
 	@Override
 	public String toString(){
-		String ret = "";
+		StringBuilder ret = new StringBuilder();
 		for(LogLine l : this){
-			ret += l.toString() + "\n";
+			ret.append(l.toString() + "\n");
 		}
-		return ret;
+		return ret.toString();
 	}
 }