diff --git a/codecs/Makefile b/codecs/Makefile
index 263f07b5fc..4b19a396d2 100644
--- a/codecs/Makefile
+++ b/codecs/Makefile
@@ -92,6 +92,7 @@ else
 SPEEX_RESAMPLE_CFLAGS:=
 endif
 
+codec_resample.o: _ASTCFLAGS+=-DOUTSIDE_SPEEX
 codec_resample.so: speex/resample.o
 
 speex/resample.o: _ASTCFLAGS+=$(call MOD_ASTCFLAGS,codec_resample) $(SPEEX_RESAMPLE_CFLAGS) -DOUTSIDE_SPEEX -DEXPORT=