diff --git a/libs/freetdm/Makefile.am b/libs/freetdm/Makefile.am
index 2ab5c29e18..96f1c9a10f 100644
--- a/libs/freetdm/Makefile.am
+++ b/libs/freetdm/Makefile.am
@@ -94,6 +94,7 @@ library_include_HEADERS = \
 	$(SRC)/include/ftdm_declare.h \
 	$(SRC)/include/ftdm_threadmutex.h \
 	$(SRC)/include/ftdm_os.h \
+	$(SRC)/include/ftdm_call_utils.h \
 	$(SRC)/include/ftdm_dso.h 
 
 lib_LTLIBRARIES	       = libfreetdm.la