diff --git a/source/net/yacy/document/parser/images/bmpParser.java b/source/net/yacy/document/parser/images/bmpParser.java
index 391fccdb9..b98d04cfb 100644
--- a/source/net/yacy/document/parser/images/bmpParser.java
+++ b/source/net/yacy/document/parser/images/bmpParser.java
@@ -186,7 +186,7 @@ public class bmpParser {
             int n = 0;
             int b;
             for (int rows = 0; rows < height; rows++) {
-                for (int columns = 0; columns < width; columns = columns + 2) {
+                for (int columns = 0; columns < width - 1; columns = columns + 2) {
                     if (offset + n >= s.length) return; // emergency break
                     b = (s[offset + n] & 0xff);
                     n++;