diff --git a/src/mod/applications/mod_t38gateway/Makefile.am b/src/mod/applications/mod_t38gateway/Makefile.am
index 37934731f8..5355d09c03 100644
--- a/src/mod/applications/mod_t38gateway/Makefile.am
+++ b/src/mod/applications/mod_t38gateway/Makefile.am
@@ -2,7 +2,7 @@ include $(top_srcdir)/build/modmake.rulesam
 MODNAME=mod_t38gateway
 
 mod_LTLIBRARIES = mod_t38gateway.la
-mod_t38gateway_la_SOURCES  = mod_t38gateway.cpp udptl.c
+mod_t38gateway_la_SOURCES  = mod_t38gateway.c udptl.c
 mod_t38gateway_la_CFLAGS   = $(AM_CFLAGS)
 mod_t38gateway_la_LIBADD   = $(switch_builddir)/libfreeswitch.la
 mod_t38gateway_la_LDFLAGS  = -avoid-version -module -no-undefined