diff --git a/lispref/Makefile.in b/lispref/Makefile.in
index 770ffd5769a..2fab86ab876 100644
--- a/lispref/Makefile.in
+++ b/lispref/Makefile.in
@@ -46,7 +46,6 @@ srcs = \
   $(srcdir)/back.texi \
   $(srcdir)/backups.texi \
   $(srcdir)/buffers.texi \
-  $(srcdir)/calendar.texi \
   $(srcdir)/commands.texi \
   $(srcdir)/compile.texi \
   $(srcdir)/control.texi \
diff --git a/lispref/makefile.w32-in b/lispref/makefile.w32-in
index 8d4a95911ce..248330167b2 100644
--- a/lispref/makefile.w32-in
+++ b/lispref/makefile.w32-in
@@ -48,7 +48,6 @@ srcs = \
   $(srcdir)/back.texi \
   $(srcdir)/backups.texi \
   $(srcdir)/buffers.texi \
-  $(srcdir)/calendar.texi \
   $(srcdir)/commands.texi \
   $(srcdir)/compile.texi \
   $(srcdir)/control.texi \