1 files changed, 1 insertions, 1 deletions

diff --git a/src/main/java/Filter.java b/src/main/java/Filter.java
index 1e50d7e..4e06800 100644
--- a/src/main/java/Filter.java
+++ b/src/main/java/Filter.java
@@ -23,7 +23,7 @@ public final class Filter {
     /**
      * Get a pixel without accessing out of bounds
      *
-     * @param gray a HxW float array
+     * @param gray a HxW float array, H > 0, W > 0
      * @param row  Y coordinate
      * @param col  X coordinate
      * @return nearest valid pixel color