diff --git a/src/mod/endpoints/mod_gsmopen/Makefile.am b/src/mod/endpoints/mod_gsmopen/Makefile.am
index e7c20f257c..8d500c3760 100644
--- a/src/mod/endpoints/mod_gsmopen/Makefile.am
+++ b/src/mod/endpoints/mod_gsmopen/Makefile.am
@@ -3,7 +3,7 @@ MODNAME=mod_gsmopen
 
 mod_LTLIBRARIES = mod_gsmopen.la
 mod_gsmopen_la_SOURCES  = mod_gsmopen.cpp gsmopen_protocol.cpp 
-mod_gsmopen_la_CXXFLAGS = $(SWITCH_AM_CXXFLAGS)
+mod_gsmopen_la_CXXFLAGS = $(SWITCH_AM_CXXFLAGS) --std=c++11
 mod_gsmopen_la_CPPFLAGS = $(SPANDSP_CFLAGS) -I.
 mod_gsmopen_la_LIBADD   = $(switch_builddir)/libfreeswitch.la $(SPANDSP_LIBS)
 mod_gsmopen_la_LDFLAGS  = -avoid-version -module -no-undefined -lctb-0.16 -lgsmme