diff --git a/test/DebugProtoTest.thrift b/test/DebugProtoTest.thrift
index b01129a..7980047 100644
--- a/test/DebugProtoTest.thrift
+++ b/test/DebugProtoTest.thrift
@@ -17,6 +17,7 @@
  * under the License.
  */
 
+namespace c_glib TTest
 namespace cpp thrift.test.debug
 namespace java thrift.test
 
diff --git a/test/OptionalRequiredTest.thrift b/test/OptionalRequiredTest.thrift
index 67e6f58..8108a7f 100644
--- a/test/OptionalRequiredTest.thrift
+++ b/test/OptionalRequiredTest.thrift
@@ -21,6 +21,7 @@
  * details.
  */
 
+namespace c_glib TTest
 namespace cpp thrift.test
 namespace java thrift.test
 
diff --git a/test/ThriftTest.thrift b/test/ThriftTest.thrift
index ce324ef..237023b 100644
--- a/test/ThriftTest.thrift
+++ b/test/ThriftTest.thrift
@@ -21,6 +21,7 @@
  * details.
  */
 
+namespace c_glib TTest
 namespace java thrift.test
 namespace cpp thrift.test
 namespace rb Thrift.Test