diff --git a/config/templates/exosphere.mk b/config/templates/exosphere.mk
index 91d3ce84..27bd718b 100644
--- a/config/templates/exosphere.mk
+++ b/config/templates/exosphere.mk
@@ -17,7 +17,7 @@ CXXFLAGS    := $(CFLAGS) $(ATMOSPHERE_CXXFLAGS) -fno-use-cxa-atexit
 ASFLAGS     := $(ATMOSPHERE_ASFLAGS) $(SETTINGS)
 else ifeq ($(strip $(ATMOSPHERE_ARCH_NAME)),arm)
 DEFINES     := $(ATMOSPHERE_DEFINES) -DATMOSPHERE_IS_EXOSPHERE
-SETTINGS    := $(ATMOSPHERE_SETTINGS) -Os -Werror -fno-non-call-exceptions \
+SETTINGS    := $(ATMOSPHERE_SETTINGS) -O2 -Werror -fno-non-call-exceptions \
                -Wno-array-bounds \
                -Wno-stringop-overflow \
                -Wno-stringop-overread
diff --git a/libexosphere/arm.mk b/libexosphere/arm.mk
index 35592ce4..6a42c37c 100644
--- a/libexosphere/arm.mk
+++ b/libexosphere/arm.mk
@@ -16,7 +16,7 @@ include  $(dir $(abspath $(lastword $(MAKEFILE_LIST))))/../config/common.mk
 #---------------------------------------------------------------------------------
 
 DEFINES     := $(ATMOSPHERE_DEFINES) -DATMOSPHERE_IS_EXOSPHERE
-SETTINGS    := $(ATMOSPHERE_SETTINGS) -Os -Wextra -Werror -flto -fno-non-call-exceptions \
+SETTINGS    := $(ATMOSPHERE_SETTINGS) -O2 -Wextra -Werror -flto -fno-non-call-exceptions \
                -Wno-array-bounds \
                -Wno-stringop-overflow \
                -Wno-stringop-overread