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-rw-r--r--src/systime.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/src/systime.h b/src/systime.h
index abbe60114d5..315f9d1ee68 100644
--- a/src/systime.h
+++ b/src/systime.h
@@ -83,9 +83,8 @@ extern struct timeval make_timeval (struct timespec) ATTRIBUTE_CONST;
extern void set_waiting_for_input (struct timespec *);
/* When lisp.h is not included Lisp_Object is not defined (this can
- happen when this files is used outside the src directory).
- Use GCPRO1 to determine if lisp.h was included. */
-#ifdef GCPRO1
+ happen when this files is used outside the src directory). */
+#ifdef EMACS_LISP_H
/* Emacs uses the integer list (HI LO US PS) to represent the time
(HI << LO_TIME_BITS) + LO + US / 1e6 + PS / 1e12. */