diff --git a/src/mod/applications/mod_fax/Makefile b/src/mod/applications/mod_fax/Makefile
index a20600c288..3ee8e67a36 100644
--- a/src/mod/applications/mod_fax/Makefile
+++ b/src/mod/applications/mod_fax/Makefile
@@ -6,7 +6,7 @@ TIFF_LA=$(TIFF_DIR)/libtiff/libtiff.la
 SPANDSP_DIR=$(BASE)/libs/spandsp
 SPANDSP_LA=$(SPANDSP_DIR)/src/libspandsp.la
 
-LOCAL_CFLAGS=-I$(SPANDSP_DIR)/src
+LOCAL_CFLAGS=-I$(SPANDSP_DIR)/src -I$(TIFF_DIR)/libtiff
 LOCAL_LIBADD=$(SPANDSP_LA)
 
 include $(BASE)/build/modmake.rules