diff --git a/lib/matplotlib/_mathtext_data.py b/lib/matplotlib/_mathtext_data.py
index 40ba4f96f103..0ef6e3fbab31 100644
--- a/lib/matplotlib/_mathtext_data.py
+++ b/lib/matplotlib/_mathtext_data.py
@@ -1173,9 +1173,16 @@
             ],
         },
     'cal':
-        [
-        (0x0041, 0x005a, 'it', 0xe22d), # A-Z
-        ],
+        {
+        'it':
+            [
+            (0x0041, 0x005a, 'it', 0xe22d), # A-Z
+            ],
+        'bfit':
+            [
+            (0x0041, 0x005a, 'bfit', 0x1d4d0), # A-Z
+            ],
+        },
     'frak':
         {
         'rm':