1 files changed, 1 insertions, 0 deletions

diff --git a/src/process.c b/src/process.c
index 55e446ad1d7..9cf17dc17ec 100644
--- a/src/process.c
+++ b/src/process.c
@@ -3666,6 +3666,7 @@ The value takes effect when `start-process' is called.");
 #include "lisp.h"
 #include "systime.h"
 #include "termopts.h"
+#include "sysselect.h"
 
 extern int frame_garbaged;