diff --git a/sys/arm/arm/db_interface.c b/sys/arm/arm/db_interface.c
--- a/sys/arm/arm/db_interface.c
+++ b/sys/arm/arm/db_interface.c
@@ -172,7 +172,7 @@
 	else
 		pmap = p->p_vmspace->vm_map.pmap;
 
-	return (pmap_extract(pmap, addr) == FALSE);
+	return (pmap_extract(pmap, addr) == 0);
 }
 
 /*