diff --git a/src/test/kc/screen-center-angle.kc b/src/test/kc/screen-center-angle.kc
index bb4d7783a..6c911db1f 100644
--- a/src/test/kc/screen-center-angle.kc
+++ b/src/test/kc/screen-center-angle.kc
@@ -34,10 +34,10 @@ void init_angle_screen(byte* screen) {
             signed word yw = (signed word)(word){ y*2, 0 };
             word angle_w = atan2_16(xw, yw);
             byte ang_w = >(angle_w+0x0080);
+            screen_bottomline[xb] = ang_w;
+            screen_topline[xb] = -ang_w;
             screen_topline[x] = 0x80+ang_w;
             screen_bottomline[x] = 0x80-ang_w;
-            screen_topline[xb] = -ang_w;
-            screen_bottomline[xb] = ang_w;
         }
         screen_topline -= 40;
         screen_bottomline += 40;
diff --git a/src/test/kc/screen-center-distance.kc b/src/test/kc/screen-center-distance.kc
index b2cf1a89e..22bd2ccd7 100644
--- a/src/test/kc/screen-center-distance.kc
+++ b/src/test/kc/screen-center-distance.kc
@@ -4,6 +4,8 @@ import "stdlib"
 import "sqr"
 import "c64"
 import "font-hex"
+import "time"
+import "print"
 
 #reserve(08)
 
@@ -13,7 +15,13 @@ const byte* SCREEN = 0x2800;
 void main() {
     init_font_hex(CHARSET);
     *D018 = toD018(SCREEN, CHARSET);
+    clock_start();
     init_dist_screen(SCREEN);
+    clock_t cyclecount = clock()-CLOCKS_PER_INIT;
+    byte* BASE_SCREEN = 0x0400;
+    byte* BASE_CHARSET = 0x1000;
+    print_dword_at(cyclecount, BASE_SCREEN);
+    *D018 = toD018(BASE_SCREEN, BASE_CHARSET);
 }
 
 // Populates 1000 bytes (a screen) with values representing the distance to the center.