diff --git a/gcc/config/mips/iris3.h b/gcc/config/mips/iris3.h
index 88dcb436239..455dceb367a 100644
--- a/gcc/config/mips/iris3.h
+++ b/gcc/config/mips/iris3.h
@@ -90,10 +90,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define WCHAR_TYPE	"unsigned char"
 #define WCHAR_TYPE_SIZE BITS_PER_UNIT
 
-/* Use atexit for static constructors/destructors, instead of defining
-   our own exit function.  */
-#define HAVE_ATEXIT
-
 /* Generate calls to memcpy, etc., not bcopy, etc.  */
 #define TARGET_MEM_FUNCTIONS