diff --git a/main.c b/main.c
index 61034e0..357cf7c 100644
--- a/main.c
+++ b/main.c
@@ -47,19 +47,19 @@ void insertInStartString(commandLine *cmdLine, int* toInsert ) {
 		cmdLine[0].string[i] = toInsert[i];
 }
 
+void copyCommandLine(commandLine* destination, commandLine source) {
+	for (int i = 0; i < source.length; i ++)
+		destination->string[i] = source.string[i];
+
+	destination->position = source.position;
+	destination->length = source.length;
+}
+
 void insertInStartCommandLine(commandLine *cmdLine, commandLine toInsert, int arrayLength) {
 	for (int i = arrayLength - 1; i > 0 ; i --) {
-		for (int j = 0; j < cmdLine[i - 1].length; j ++)
-			cmdLine[i].string[j] = cmdLine[i - 1].string[j];
-			
-		cmdLine[i].length = cmdLine[i - 1].length;
-		cmdLine[i].position = cmdLine[i - 1].position;
+		copyCommandLine(&(cmdLine[i]), cmdLine[i - 1]);
 	}
-	for (int i = 0; i < toInsert.length; i ++)
-		cmdLine[0].string[i] = toInsert.string[i];
-		
-	cmdLine[0].length = toInsert.length;
-	cmdLine[0].position = toInsert.position;
+	copyCommandLine(&(cmdLine[0]), toInsert);
 }
 
 void insert(int *cmd_string, int toInsert , int position, int len) {
@@ -88,14 +88,7 @@ void resetBuffer (commandLine *buffer) {
 	buffer->position = 0;
 }
 
-void copyCommandLine(commandLine* destination, commandLine source) {
-	for (int i = 0; i < source.length; i ++)
-		destination->string[i] = source.string[i];
 
-	destination->position = source.position;
-	destination->length = source.length;
-	
-}
 
 int main (int argc, char* argv[]) {
 	initscr();
@@ -161,12 +154,14 @@ int main (int argc, char* argv[]) {
 			case KEY_UP:
 				historyPosition += historyPosition < historySize? 1 : 0;
 				resetBuffer(&buffer);
-				if (historyPosition > 0) copyCommandLine(&buffer, history[historyPosition - 1]);
+				if (historyPosition > 0)
+					copyCommandLine(&buffer, history[historyPosition - 1]);
 			break;
 			case KEY_DOWN:
 				historyPosition -= historyPosition > 0? 1 : 0;
 				resetBuffer(&buffer);
-				if (historyPosition > 0) copyCommandLine(&buffer, history[historyPosition - 1]);
+				if (historyPosition > 0)
+					copyCommandLine(&buffer, history[historyPosition - 1]);
 			break;
 			case KEY_BACKSPACE:
 				pop(&buffer);