1 files changed, 1 insertions, 1 deletions
diff --git a/lib.c b/lib.c
index 0524a5d9..079b840c 100644
--- a/lib.c
+++ b/lib.c
@@ -3288,7 +3288,7 @@ cnum c_fixnum(val num, val self)
 #if HAVE_FPCLASSIFY
 INLINE int bad_float(double d)
 {
-  switch fpclassify(d) {
+  switch (fpclassify(d)) {
   case FP_ZERO:
   case FP_NORMAL:
   case FP_SUBNORMAL: