diff --git a/src/s/irix6-0.h b/src/s/irix6-0.h
index 1d200055ba3..d7fca0fbfbb 100644
--- a/src/s/irix6-0.h
+++ b/src/s/irix6-0.h
@@ -3,3 +3,7 @@
 /* Irix 6 tries to do 64 bits, but doesn't do it fully,
    so inhibit that.  */
 #define IRIX_FORCE_32_BITS
+
+#ifndef __GNUC__
+#define LD_SWITCH_SYSTEM -32
+#endif