diff --git a/kernel/x86_64/symv_L_sse.S b/kernel/x86_64/symv_L_sse.S
index aad66b4ac..5083d0b01 100644
--- a/kernel/x86_64/symv_L_sse.S
+++ b/kernel/x86_64/symv_L_sse.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 12)
 #endif
 
-#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
+#if defined(NEHALEM) || defined(SANDYBRIDGE) || defined(HASWELL)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 12)
diff --git a/kernel/x86_64/symv_L_sse2.S b/kernel/x86_64/symv_L_sse2.S
index 1b28bcd20..a8bbb1cad 100644
--- a/kernel/x86_64/symv_L_sse2.S
+++ b/kernel/x86_64/symv_L_sse2.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 12)
 #endif
 
-#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
+#if defined(NEHALEM) || defined(SANDYBRIDGE) || defined(HASWELL)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 12)
diff --git a/kernel/x86_64/symv_U_sse.S b/kernel/x86_64/symv_U_sse.S
index 12aab61ed..47af7726a 100644
--- a/kernel/x86_64/symv_U_sse.S
+++ b/kernel/x86_64/symv_U_sse.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 12)
 #endif
 
-#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
+#if defined(NEHALEM) || defined(SANDYBRIDGE)  || defined(HASWELL)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 12)
diff --git a/kernel/x86_64/symv_U_sse2.S b/kernel/x86_64/symv_U_sse2.S
index d044dfbe2..57d8c2a20 100644
--- a/kernel/x86_64/symv_U_sse2.S
+++ b/kernel/x86_64/symv_U_sse2.S
@@ -57,7 +57,7 @@
 #define PREFETCHSIZE	(16 * 12)
 #endif
 
-#if defined(NEHALEM) || defined(NEHALEM_OPTIMIZATION)
+#if defined(NEHALEM) || defined(SANDYBRIDGE)  || defined(HASWELL)
 #define PREFETCH	prefetcht0
 #define PREFETCHW	prefetcht0
 #define PREFETCHSIZE	(16 * 24)