1 files changed, 1 insertions, 2 deletions

diff --git a/src/data.c b/src/data.c
index eb3f870b97c..76a54547a5d 100644
--- a/src/data.c
+++ b/src/data.c
@@ -2733,8 +2733,7 @@ Both must be integers or markers.  */)
 
 #ifndef HAVE_FMOD
 double
-fmod (f1, f2)
-     double f1, f2;
+fmod (double f1, double f2)
 {
   double r = f1;