diff --git a/kernel/mem.c b/kernel/mem.c
index 44487d81..c5854936 100644
--- a/kernel/mem.c
+++ b/kernel/mem.c
@@ -101,10 +101,7 @@ static void page_allocator_init(void)
 	pa_start = aal_mc_get_memory_address(AAL_MC_GMA_AVAIL_START, 0);
 	pa_end = aal_mc_get_memory_address(AAL_MC_GMA_AVAIL_END, 0);
 
-    //	pa_start &= PAGE_MASK;
-    // physical memory allocator stores bitmap in array of long int
-    // so the unit size is 64-page
-    pa_start = (pa_start + PAGE_SIZE * 64 - 1) & ~(PAGE_SIZE * 64 - 1);
+	pa_start &= PAGE_MASK;
 	pa_end = (pa_end + PAGE_SIZE - 1) & PAGE_MASK;
 
 	/*