diff --git a/winsup/cygwin/math/sinhl.c b/winsup/cygwin/math/sinhl.c
index f6ecef0f2..4db0e51ff 100644
--- a/winsup/cygwin/math/sinhl.c
+++ b/winsup/cygwin/math/sinhl.c
@@ -67,7 +67,7 @@ long double sinhl(long double x)
   if (x_class == FP_ZERO)
     return x;
   if (x_class == FP_INFINITE ||
-      (fabs (x) > (MAXLOGL + LOGE2L)))
+      (fabsl (x) > (MAXLOGL + LOGE2L)))
   {
     errno = ERANGE;
 #ifdef INFINITIES