1 files changed, 4 insertions, 0 deletions

diff --git a/src/lisp.h b/src/lisp.h
index 94ba6bc3948..a1fac63abdc 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -561,8 +561,12 @@ typedef struct
        usually.  '\0'-terminated.  This really shouldn't have a fixed size.  */
     char echobuf[ECHOBUFSIZE];
   } PERDISPLAY;
+#ifdef MULTI_PERDISPLAY
+extern PERDISPLAY *get_perdisplay ();
+#else
 extern PERDISPLAY the_only_perdisplay;
 #define get_perdisplay(f) (&the_only_perdisplay)
+#endif
 
 /* In a cons, the markbit of the car is the gc mark bit */