diff --git a/PhysicsAnalysis/D3PDMaker/D3PDMakerTest/CMakeLists.txt b/PhysicsAnalysis/D3PDMaker/D3PDMakerTest/CMakeLists.txt
index ce5f626fcbcbdd99a3d3d3f361cb187e8c436f02..d69cb220a10f97ecc2a1a4b1e0aa83eb1199f258 100644
--- a/PhysicsAnalysis/D3PDMaker/D3PDMakerTest/CMakeLists.txt
+++ b/PhysicsAnalysis/D3PDMaker/D3PDMakerTest/CMakeLists.txt
@@ -59,5 +59,5 @@ set( D3PDMAKERTEST_REFERENCE_TAG D3PDMakerTest/D3PDMakerTest-01-00-00 )
 atlas_add_test( D3PDTest1
   SCRIPT test/D3PDTest1.sh
   POST_EXEC_SCRIPT "${CMAKE_CURRENT_SOURCE_DIR}/test/post_check.sh D3PDTest1"
-  PROPERTIES TIMEOUT 300
+  PROPERTIES TIMEOUT 600
   ENVIRONMENT "ATLAS_REFERENCE_TAG=${D3PDMAKERTEST_REFERENCE_TAG}" )