diff --git a/src/config.h b/src/config.h
index 425213d..425d2c7 100644
--- a/src/config.h
+++ b/src/config.h
@@ -16,3 +16,5 @@
 
 #define BACKCOLOR sfBlack
 
+#define CPUSPEED 4096 * 16
+
diff --git a/src/ls7emulator.c b/src/ls7emulator.c
index b99c529..d93c592 100644
--- a/src/ls7emulator.c
+++ b/src/ls7emulator.c
@@ -53,6 +53,12 @@ void drawScreen(){
 }
 
 int main(int argc, char *argv[]){
+    if (argc == 2) { openFile(argv[1]); }
+    else {
+        puts("Please specify a input file as an Argument");
+        exit(1);
+    }
+    
     window = sfRenderWindow_create((sfVideoMode){800, 600, 24}, "LS7 Emulator", sfResize | sfClose, NULL);
     sfRenderWindow_setVerticalSyncEnabled(window, sfFalse);
     sfRenderWindow_setFramerateLimit(window, 60);
@@ -61,17 +67,12 @@ int main(int argc, char *argv[]){
     renderStates = sfRenderStates_default();
     sfTransform_scale(&renderStates.transform, 2, 2);
     
-    if (argc == 2) { openFile(argv[1]); }
-    else {
-        printf("Please specify a input file\n");
-        exit(1);
-    }
     resetSystem();
     
     while (sfRenderWindow_isOpen(window)){
         pollEvents(window);
         
-        for (int i = 0; i < 4096 * 16; i++) step6502();
+        for (int i = 0; i < CPUSPEED; i++) step6502();
         irq6502();
         
         sfRenderWindow_clear(window, BACKCOLOR);