diff --git a/kernel/x86/trsm_kernel_LT_4x4_penryn.S b/kernel/x86/trsm_kernel_LT_4x4_penryn.S
index 361ccf603..e2f731fca 100644
--- a/kernel/x86/trsm_kernel_LT_4x4_penryn.S
+++ b/kernel/x86/trsm_kernel_LT_4x4_penryn.S
@@ -62,7 +62,7 @@
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif
 
-#if defined(NEHALEM) || defined(SANDYBRIDGE) || defined(HASWELL || defined (SKYLAKEX))
+#if defined(NEHALEM) || defined(SANDYBRIDGE) || defined(HASWELL) || defined (SKYLAKEX)
 #define PREFETCH     prefetcht0
 #define PREFETCHSIZE  (8 * 21 + 4)
 #endif