diff --git a/src/Makefile.am b/src/Makefile.am
index 272827d..f9bb17f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -44,7 +44,8 @@
 	pcu_vty.c \
 	tbf.cpp \
 	bts.cpp \
-	poll_controller.cpp
+	poll_controller.cpp \
+	encoding.cpp
 
 if ENABLE_SYSMOBTS
 libgprs_la_SOURCES += \