diff --git a/img2cpi.c b/img2cpi.c
index ac448d5..defe99f 100644
--- a/img2cpi.c
+++ b/img2cpi.c
@@ -257,7 +257,7 @@ int main(int argc, char **argv) {
 
         for (int oy = 0; oy < 3; oy++) {
           for (int ox = 0; ox < 2; ox++) {
-            unsigned char pix = quantized_image->pixels[ox + (x + (y * 3 + oy)) * 2];
+            unsigned char pix = quantized_image->pixels[ox + (x + (y * 3 + oy) * args.width) * 2];
             float brightness = get_color_brightness(palette[pix]);
             if (brightness >= brightest_diff) {
               brightest_i = pix;
@@ -275,7 +275,7 @@ int main(int argc, char **argv) {
         for (int oy = 0; oy < 3; oy++) {
           for (int ox = 0; ox < 2; ox++) {
             if (ox == 1 && oy == 2) continue;
-            unsigned char pix = quantized_image->pixels[ox + (x + (y * 3 + oy)) * 2];
+            unsigned char pix = quantized_image->pixels[ox + (x + (y * 3 + oy) * args.width) * 2];
             float diff_bg = get_color_difference(palette[darkest_i], palette[pix]);
             float diff_fg = get_color_difference(palette[brightest_i], palette[pix]);
             if (diff_fg < diff_bg) {
@@ -285,10 +285,10 @@ int main(int argc, char **argv) {
         }
 
         {
-          unsigned char pix = quantized_image->pixels[1 + (x + (y * 3 + 2)) * 2];
+          unsigned char pix = quantized_image->pixels[1 + (x + (y * 3 + 2) * args.width) * 2];
           float diff_bg = get_color_difference(palette[darkest_i], palette[pix]);
           float diff_fg = get_color_difference(palette[brightest_i], palette[pix]);
-          if (diff_fg > diff_bg) {
+          if (diff_fg < diff_bg) {
             bitmap ^= 31;
             unsigned char tmp = darkest_i;
             darkest_i = brightest_i;