diff --git a/ctrl/guru.dat b/ctrl/guru.dat
index 1a9cbe16da4b522f4e4707642f98b2afa95e7660..1baa93c32f79e53fa9b1e1d1c49fe8395f7fe2b6 100644
--- a/ctrl/guru.dat
+++ b/ctrl/guru.dat
@@ -908,7 +908,7 @@ single-user, single-tasking, single-vendor, single-processor... see a pattern?
 (OS/2|OS2)
 Unrealized potential. :-(
 What a waste of time that was: developing apps/drivers for OS/2.
-IBM just wasn't up to marketting and supporting OS/2, unfortunately.
+IBM just wasn't up to marketing and supporting OS/2, unfortunately.
 Microsoft OS/2 was a thing!
 OS/2 was originally known as DOS v5!
 Synchronet v2.3 had a native OS/2 version.