diff --git a/src/northbridge/amd/agesa/family15/northbridge.c b/src/northbridge/amd/agesa/family15/northbridge.c
index 8d64a3068b..d7e952122f 100644
--- a/src/northbridge/amd/agesa/family15/northbridge.c
+++ b/src/northbridge/amd/agesa/family15/northbridge.c
@@ -619,7 +619,7 @@ static struct hw_mem_hole_info get_hw_mem_hole_info(void)
 				mem_hole.node_id = i;
 				break; //only one hole
 			}
-			limit_k = ((resource_t)((d.mask + 0x00000100) & 0x1fffff00)) << 9;
+			limit_k = ((resource_t)(((d.mask & ~1) + 0x000FF) & 0x1fffff00)) << 9;
 			limitk_pri = limit_k;
 		}
 	}
@@ -779,7 +779,7 @@ static void domain_set_resources(device_t dev)
 
 		if (!(d.mask & 1)) continue;
 		basek = ((resource_t)(d.base & 0x1fffff00)) << 9; // could overflow, we may lost 6 bit here
-		limitk = ((resource_t)((d.mask + 0x00000100) & 0x1fffff00)) << 9 ;
+		limitk = ((resource_t)(((d.mask & ~1) + 0x000FF) & 0x1fffff00)) << 9;
 
 		sizek = limitk - basek;
 
diff --git a/src/northbridge/amd/agesa/family15tn/northbridge.c b/src/northbridge/amd/agesa/family15tn/northbridge.c
index 7f8650c69b..c63890df00 100644
--- a/src/northbridge/amd/agesa/family15tn/northbridge.c
+++ b/src/northbridge/amd/agesa/family15tn/northbridge.c
@@ -628,7 +628,7 @@ static struct hw_mem_hole_info get_hw_mem_hole_info(void)
 				mem_hole.node_id = i;
 				break; //only one hole
 			}
-			limit_k = ((resource_t)((d.mask + 0x00000100) & 0x1fffff00)) << 9;
+			limit_k = ((resource_t)(((d.mask & ~1) + 0x000FF) & 0x1fffff00)) << 9;
 			limitk_pri = limit_k;
 		}
 	}