diff --git a/src/tools/grid.py b/src/tools/grid.py
index 41475db..8647561 100644
--- a/src/tools/grid.py
+++ b/src/tools/grid.py
@@ -652,7 +652,7 @@ class Grid:
         for y, row in enumerate(data):
             for x, col in enumerate(row):
                 if translate is not None and col in translate:
-                    if isinstance(col, Callable):
+                    if isinstance(translate[col], Callable):
                         col = translate[col](col)
                     else:
                         col = translate[col]