--- a/hotspot/src/os/aix/vm/os_aix.cpp	Wed Apr 12 13:05:59 2017 +0200
+++ b/hotspot/src/os/aix/vm/os_aix.cpp	Wed Apr 12 17:53:18 2017 +0200
@@ -2110,7 +2110,7 @@
   }
 
   // Handle alignment.
-  char* const addr_aligned = (char *)align_ptr_up(addr, alignment_hint);
+  char* const addr_aligned = align_ptr_up(addr, alignment_hint);
   const size_t waste_pre = addr_aligned - addr;
   char* const addr_aligned_end = addr_aligned + size;
   const size_t waste_post = extra_size - waste_pre - size;
@@ -2361,7 +2361,7 @@
 
   // Always round to os::vm_page_size(), which may be larger than 4K.
   size = align_size_up(size, os::vm_page_size());
-  addr = (char *)align_ptr_up(addr, os::vm_page_size());
+  addr = align_ptr_up(addr, os::vm_page_size());
 
   bool rc = false;
   bool remove_bookkeeping = false;