release-request-951b3a8b-6c0c-4d2e-8af4-1c3f7e209f66-for-git_oc-release-4006899 snap-temp-L39600000063784275

Change-Id: I03406692f67e0130e65133b354ad47d536c2bc41
diff --git a/Android.mk b/Android.mk
index d037da2..6bc8514 100644
--- a/Android.mk
+++ b/Android.mk
@@ -32,7 +32,7 @@
 LOCAL_CFLAGS_x86 += -DONLY_C
 LOCAL_CFLAGS_x86_64 += -DONLY_C
 
-LOCAL_CFLAGS += -O2 -D_GNU_SOURCE
+LOCAL_CFLAGS += -O2 -D_GNU_SOURCE -funsigned-char
 
 LOCAL_C_INCLUDES:= \
 	$(LOCAL_PATH)/Tremolo