diff --git a/Makefile b/Makefile
index aa9d9b0e0c82..2de98e4eb2ec 100644
--- a/Makefile
+++ b/Makefile
@@ -662,9 +662,9 @@ ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 KBUILD_CFLAGS	+= -Os
 else
 ifdef CONFIG_PROFILE_ALL_BRANCHES
-KBUILD_CFLAGS	+= -O3
+KBUILD_CFLAGS	+= -O2
 else
-KBUILD_CFLAGS   += -O3
+KBUILD_CFLAGS   += -O2
 endif
 endif