--- a/module/iso_c_binding.f90
+++ b/module/iso_c_binding.f90
@@ -56,7 +56,7 @@
 #if __x86_64__
     c_long_double = 10
 #else
-    c_long_double = 16
+    c_long_double = 8
 #endif
 
   integer, parameter :: &
