diff --git a/src/h/config.h.in b/src/h/config.h.in
index 658f6feb3..77fbb01c9 100644
--- a/src/h/config.h.in
+++ b/src/h/config.h.in
@@ -307,7 +307,11 @@ typedef unsigned @CL_FIXNUM_TYPE@ cl_hashkey;
 /* can manipulate floating point environment				*/
 #undef HAVE_FENV_H
 /* can activate individual traps in floating point environment		*/
+/* this flag has to be deactivated for the Itanium architecture, where  */
+/* the GNU libc functions are broken                                    */
+#ifndef __ia64__
 #undef HAVE_FEENABLEEXCEPT
+#endif
 /* do we want to deactivate all support for floating point exceptions   */
 #undef ECL_AVOID_FPE_H
 /* do we want to have signed zeros					*/