1 files changed, 1 insertions, 1 deletions

diff --git a/src/keyboard.c b/src/keyboard.c
index 914721e4894..96b940a8309 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -3298,7 +3298,7 @@ init_keyboard ()
 /* Note SIGIO has been undef'd if FIONREAD is missing.  */
 #ifdef SIGIO
       signal (SIGIO, input_available_signal);
-#endif SIGIO
+#endif /* SIGIO */
     }
 
 /* Use interrupt input by default, if it works and noninterrupt input