diff --git a/share/mk/doc.docbook.mk b/share/mk/doc.docbook.mk
index a15b1d753b..803651bd85 100644
--- a/share/mk/doc.docbook.mk
+++ b/share/mk/doc.docbook.mk
@@ -13,7 +13,7 @@
 # Document-specific variables
 #
 #	DOC		This should be set to the name of the DocBook
-#			marked-up file, without the .sgml or .docb suffix.
+#			marked-up file, without the .sgml suffix.
 #			
 #			It also determins the name of the output files -
 #			${DOC}.html.
diff --git a/share/mk/doc.html.mk b/share/mk/doc.html.mk
index 66a15f37f5..3d83b864e4 100644
--- a/share/mk/doc.html.mk
+++ b/share/mk/doc.html.mk
@@ -13,7 +13,7 @@
 # Document-specific variables
 #
 #	DOC		This should be set to the name of the HTML
-#			marked-up file, without the .sgml or .docb suffix.
+#			marked-up file, without the .sgml suffix.
 #			
 #			It also determins the name of the output files -
 #			${DOC}.html.