diff --git a/config.org b/config.org
index 386b086..306ff75 100644
--- a/config.org
+++ b/config.org
@@ -9868,7 +9868,7 @@ abbreviations and make the space normal.
     ;; Temporal
     "est." "c."
     ;; Honorifics
-    "Dr." "Mr." "Mrs." "Ms." "Miss." "Sr." "Jr."
+    "Prof." "Dr." "Mr." "Mrs." "Ms." "Miss." "Sr." "Jr."
     ;; Components of a work
     "ed." "vol." "sec." "chap." "pt." "pp." "op." "no."
     ;; Common usage