diff --git a/SmoulderingBeachBall/InternalServices.fs b/SmoulderingBeachBall/InternalServices.fs
index 7a5e334..8c7dee1 100644
--- a/SmoulderingBeachBall/InternalServices.fs
+++ b/SmoulderingBeachBall/InternalServices.fs
@@ -9,7 +9,7 @@
         let validateDimension dimension =
             match dimension with
             | dimension when dimension <= 0 -> 
-                invalidArg "dimension" "[ERROR] The width and height must be greater than 0."
+                invalidArg "dimension" "[ERROR] The images height and width must be greater than 0."
             | _ -> ()
 
         let validateDirectory filePath =