diff --git a/Controller/CropController.lua b/Controller/CropController.lua
index e78d0fb..9bcafb1 100644
--- a/Controller/CropController.lua
+++ b/Controller/CropController.lua
@@ -43,7 +43,7 @@ function CropController:displayMatrix()
                 else
                     term.setTextColour(colours.green)
                 end
-                term.write(self.matrix[i][j])
+                term.write(tostring(self.matrix[i][j]))
             else
                 term.setTextColour(colours.blue)
                 term.write("W")