diff --git a/kernel/Makefile b/kernel/Makefile
index e811ed43d..fb1d5d39a 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -5,13 +5,6 @@ endif
 TOPDIR	= ..
 include $(TOPDIR)/Makefile.system
 
-ifdef HAVE_SSE3
-CFLAGS += -msse3
-endif
-ifdef HAVE_SSSE3
-CFLAGS += -mssse3
-endif
-
 ifeq ($(ARCH), power)
 ifeq ($(C_COMPILER), CLANG)
  override CFLAGS += -fno-integrated-as
@@ -38,12 +31,6 @@ ifdef NO_AVX2
 endif
 
 ifdef TARGET_CORE
-	ifeq ($(TARGET_CORE), $(filter $(TARGET_CORE),PRESCOTT CORE2 PENRYN DUNNINGTON ATOM NANO SANDYBRIDGE HASWELL NEHALEM ZEN BARCELONA BOBCAT BULLDOZER PILEDRIVER EXCAVATOR STEAMROLLER OPTERON_SSE3))
-	override CFLAGS += -msse -msse2 -msse3 -mssse3 -msse4.1
-endif
-	ifeq ($(TARGET_CORE), $(filter $(TARGET_CORE),KATMAI COPPERMINE BANIAS NORTHWOOD ATHLON OPTERON))
-	override CFLAGS += -msse -msse2
-endif
 ifeq ($(TARGET_CORE), COOPERLAKE)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE)
  ifeq ($(GCCVERSIONGTEQ10), 1)