1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/stub/e_fmodl.c b/sysdeps/stub/e_fmodl.c
index b47912581b..25cc114808 100644
--- a/sysdeps/stub/e_fmodl.c
+++ b/sysdeps/stub/e_fmodl.c
@@ -1,10 +1,12 @@
 #include <math.h>
 #include <stdio.h>
+#include <errno.h>
 
 long double
 __ieee754_fmodl (long double x, long double y)
 {
   fputs ("__ieee754_fmodl not implemented\n", stderr);
+  __set_errno (ENOSYS);
   return 0.0;
 }