Index: arch/ppc32/src/mm/frame.c
===================================================================
--- arch/ppc32/src/mm/frame.c	(revision 40378479b8bf47b5c6ddf534dfbafae2c8441d34)
+++ arch/ppc32/src/mm/frame.c	(revision a9ef68bfb5a4d2d85ccd7edf79d3fcc2f7c9d108)
@@ -57,6 +57,6 @@
 	}
 
-	/* First is exception vector, second is 'implementation specific' */
-	frame_mark_unavailable(0, 2);
+	/* First is exception vector, second is 'implementation specific', third and fourth is reserved */
+	frame_mark_unavailable(0, 4);
 	
 	/* Merge all zones to 1 big zone */