diff --git a/pic-sure-util/src/main/java/edu/harvard/dbmi/avillach/util/VisualizationUtil.java b/pic-sure-util/src/main/java/edu/harvard/dbmi/avillach/util/VisualizationUtil.java
index bbdce22b..53a8e23d 100644
--- a/pic-sure-util/src/main/java/edu/harvard/dbmi/avillach/util/VisualizationUtil.java
+++ b/pic-sure-util/src/main/java/edu/harvard/dbmi/avillach/util/VisualizationUtil.java
@@ -105,7 +105,7 @@ public static Map<String, Integer> limitKeySize(Map<String, Integer> axisMap) {
                     int countFromEnd = 6;
                     String uniqueness;
                     do {
-                        // get the original key substring max x + 3 (for the dots) + countFromEnd.
+                        // get the original key substring max x - 3 (for the dots) - countFromEnd.
                         proposedKey = new StringBuilder(key.substring(0, MAX_X_LABEL_LINE_LENGTH - 3 - countFromEnd));
 
                         // Get the last "countFromEnd" characters