diff --git a/package/tremor/tremor.mk b/package/tremor/tremor.mk
index fceee1bdc8..cd1d32363b 100644
--- a/package/tremor/tremor.mk
+++ b/package/tremor/tremor.mk
@@ -12,4 +12,11 @@ TREMOR_AUTORECONF = YES
 TREMOR_INSTALL_STAGING = YES
 TREMOR_DEPENDENCIES = libogg
 
+# tremor has ARM assembly code that cannot be compiled in Thumb2 mode,
+# so we must force the traditional ARM mode.
+ifeq ($(BR2_arm),y)
+TREMOR_CONF_ENV = \
+	CFLAGS="$(TARGET_CFLAGS) -marm"
+endif
+
 $(eval $(autotools-package))