diff --git a/PNG.js b/PNG.js
index b1e0f48..24b78d0 100644
--- a/PNG.js
+++ b/PNG.js
@@ -162,8 +162,18 @@ PNG.prototype.getPixel = function(x, y){
 			this.palette[pixels[i] * 3 + 1],
 			this.palette[pixels[i] * 3 + 2],
 			alpha];
-		case 4: return [pixels[i], pixels[i], pixels[i], pixels[i + 1]];
-		case 6: return [pixels[i], pixels[i + 1], pixels[i + 2], pixels[i + 3]];
+		case 4:
+			if (this.bitDepth == 8) {
+				return [pixels[i], pixels[i], pixels[i], pixels[i + 1]];
+			} else {
+				return [pixels[i + 1], pixels[i + 1], pixels[i + 1], pixels[i + 3]];
+			}
+		case 6:
+			if (this.bitDepth == 8) {
+				return [pixels[i], pixels[i + 1], pixels[i + 2], pixels[i + 3]];
+			} else {
+				return [pixels[i + 1], pixels[i + 3], pixels[i + 5], pixels[i + 7]];
+			}
 	}
 };