diff --git a/development/tools/patch-preamble b/development/tools/patch-preamble
index b9f5ed12a8..f385953e2e 100644
--- a/development/tools/patch-preamble
+++ b/development/tools/patch-preamble
@@ -1,4 +1,4 @@
-This is patch-VERSION, the NUMst maintenance patch against LyX ORIGINAL. 
+This is patch-VERSION, the NUM maintenance patch against LyX ORIGINAL. 
 You need the source of lyx LAST to apply this patch.
 
 This patch should be applied like this