diff --git a/compiler/cpp/Makefile.am b/compiler/cpp/Makefile.am
index 601fd32..52b9c61 100644
--- a/compiler/cpp/Makefile.am
+++ b/compiler/cpp/Makefile.am
@@ -70,6 +70,7 @@
 thrift_SOURCES += src/generate/t_c_glib_generator.cc \
                   src/generate/t_cpp_generator.cc \
                   src/generate/t_java_generator.cc \
+                  src/generate/t_json_generator.cc \
                   src/generate/t_as3_generator.cc \
                   src/generate/t_csharp_generator.cc \
                   src/generate/t_py_generator.cc \