diff --git a/src/mod/codecs/mod_g723_1/Makefile b/src/mod/codecs/mod_g723_1/Makefile
index e8b6fbdbca..47c7c8a2a5 100644
--- a/src/mod/codecs/mod_g723_1/Makefile
+++ b/src/mod/codecs/mod_g723_1/Makefile
@@ -1,6 +1,13 @@
+ifeq ($(shell ls $(BASE)/libs/libg723_1),$(BASE)/libs/libg723_1)
+
 CFLAGS += -I$(PREFIX)/include/g723
 LDFLAGS +=-lg723
 
+else
+
+CFLAGS += -DG723_PASSTHROUGH
+endif
+
 all:	$(MODNAME).$(DYNAMIC_LIB_EXTEN)
 
 depends:
diff --git a/src/mod/codecs/mod_g729/Makefile b/src/mod/codecs/mod_g729/Makefile
index 63ba4d4bdd..ad8c52540c 100644
--- a/src/mod/codecs/mod_g729/Makefile
+++ b/src/mod/codecs/mod_g729/Makefile
@@ -1,6 +1,14 @@
+ifeq ($(shell ls $(BASE)/libs/libg729),$(BASE)/libs/libg729)
+
 CFLAGS += -I$(PREFIX)/include/g729
 LDFLAGS +=-lg729
 
+else
+
+CFLAGS += -DG729_PASSTHROUGH
+
+endif
+
 all:	$(MODNAME).$(DYNAMIC_LIB_EXTEN)
 
 depends: