diff --git a/kernel/Makefile b/kernel/Makefile
index abe2e08d6..65e2a0ad6 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -46,6 +46,9 @@ endif
 ifdef TARGET_CORE
 	ifeq ($(TARGET_CORE), $(filter $(TARGET_CORE),PRESCOTT CORE2 PENRYN DUNNINGTON ATOM NANO SANDYBRIDGE HASWELL NEHALEM ZEN BARCELONA BOBCAT BULLDOZER PILEDRIVER EXCAVATOR STEAMROLLER OPTERON_SSE3))
 	override CFLAGS += -msse3 -mssse3 -msse4.1
+endif
+	ifeq ($(TARGET_CORE), $(filter $(TARGET_CORE),KATMAI COPPERMINE NEHALEM BARCELONA CORE2 PRESCOTT NORTHWOOD ATHLON))
+	override CFLAGS += -msse
 endif
 ifeq ($(TARGET_CORE), COOPERLAKE)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE)