diff --git a/collada_parser/src/collada_parser.cpp b/collada_parser/src/collada_parser.cpp
index 27a544f..f1a5bdc 100644
--- a/collada_parser/src/collada_parser.cpp
+++ b/collada_parser/src/collada_parser.cpp
@@ -70,6 +70,8 @@
 #define FOREACH(it, v) for(typeof((v).begin())it = (v).begin(); it != (v).end(); (it)++)
 #define FOREACHC FOREACH
 
+namespace ColladaDOM150 { }
+
 namespace urdf {
 
 using namespace ColladaDOM150;
diff --git a/collada_urdf/src/collada_urdf.cpp b/collada_urdf/src/collada_urdf.cpp
index acebfb2..9fd20c6 100644
--- a/collada_urdf/src/collada_urdf.cpp
+++ b/collada_urdf/src/collada_urdf.cpp
@@ -83,6 +83,8 @@
 
 using namespace std;
 
+namespace ColladaDOM150 { }
+
 namespace collada_urdf {
 
 using namespace ColladaDOM150;