diff --git a/Makefile.x86_64 b/Makefile.x86_64
index 65b67bba1..e793a1c2f 100644
--- a/Makefile.x86_64
+++ b/Makefile.x86_64
@@ -9,9 +9,11 @@ endif
 endif
 
 ifdef HAVE_SSE3
+ifndef DYNAMIC_ARCH
 CCOMMON_OPT += -msse3
 FCOMMON_OPT += -msse3
 endif
+endif
 
 ifeq ($(CORE), SKYLAKEX)
 ifndef DYNAMIC_ARCH
diff --git a/kernel/Makefile b/kernel/Makefile
index 0f0fa5a5e..290fb2afe 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -41,6 +41,9 @@ ifdef NO_AVX2
 endif
 
 ifdef TARGET_CORE
+	ifeq ($(TARGET_CORE), $(filter $(TARGET_CORE),PRESCOTT CORE2 PENRYN DUNNINGTON ATOM NANO NEHALEM BARCELONA BOBCAT BULLDOZER PILEDRIVER EXCAVATOR STEAMROLLER OPTERON_SSE3))
+	override CFLAGS += -msse3
+endif
 ifeq ($(TARGET_CORE), COOPERLAKE)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE)
  ifeq ($(GCCVERSIONGTEQ10), 1)