diff --git a/configs/init-org.el b/configs/init-org.el
index 85020a6..ca99ed4 100644
--- a/configs/init-org.el
+++ b/configs/init-org.el
@@ -83,6 +83,7 @@
                                          (C . t)
                                          (R . t)
                                          (awk . t)
+                                         (calc . t)
                                          (clojure . t)
                                          (go . t)
                                          (haskell . t)