diff --git a/code/ColladaExporter.cpp b/code/ColladaExporter.cpp
index fdb31903f..ee29e93ec 100644
--- a/code/ColladaExporter.cpp
+++ b/code/ColladaExporter.cpp
@@ -691,7 +691,7 @@ void ColladaExporter::WriteMaterials()
 
     materials[a].shininess.exist = mat->Get( AI_MATKEY_SHININESS, materials[a].shininess.value) == aiReturn_SUCCESS;
     materials[a].transparency.exist = mat->Get( AI_MATKEY_OPACITY, materials[a].transparency.value) == aiReturn_SUCCESS;
-    materials[a].transparency.value = 1 - materials[a].transparency.value;
+    materials[a].transparency.value = materials[a].transparency.value;
     materials[a].index_refraction.exist = mat->Get( AI_MATKEY_REFRACTI, materials[a].index_refraction.value) == aiReturn_SUCCESS;
   }