diff --git a/package/sdl2/sdl2.mk b/package/sdl2/sdl2.mk
index 4646e7d1f8..42b4a433e8 100644
--- a/package/sdl2/sdl2.mk
+++ b/package/sdl2/sdl2.mk
@@ -54,6 +54,10 @@ SDL2_POST_INSTALL_STAGING_HOOKS += SDL2_FIX_SDL2_CONFIG_CMAKE
 # We must enable static build to get compilation successful.
 SDL2_CONF_OPTS += --enable-static
 
+ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
+SDL2_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -marm"
+endif
+
 ifeq ($(BR2_PACKAGE_HAS_UDEV),y)
 SDL2_DEPENDENCIES += udev
 SDL2_CONF_OPTS += --enable-libudev
@@ -76,7 +80,7 @@ endif
 ifeq ($(BR2_PACKAGE_SDL2_DIRECTFB),y)
 SDL2_DEPENDENCIES += directfb
 SDL2_CONF_OPTS += --enable-video-directfb
-SDL2_CONF_ENV = ac_cv_path_DIRECTFBCONFIG=$(STAGING_DIR)/usr/bin/directfb-config
+SDL2_CONF_ENV += ac_cv_path_DIRECTFBCONFIG=$(STAGING_DIR)/usr/bin/directfb-config
 else
 SDL2_CONF_OPTS += --disable-video-directfb
 endif