diff --git a/PhysicsAnalysis/CommonTools/ExpressionEvaluation/CMakeLists.txt b/PhysicsAnalysis/CommonTools/ExpressionEvaluation/CMakeLists.txt
index bdf2630d4bd0a2a6e3806212dad0db63a7ba9869..0a1e12017b645505adbd68ccc626109b27a96a23 100644
--- a/PhysicsAnalysis/CommonTools/ExpressionEvaluation/CMakeLists.txt
+++ b/PhysicsAnalysis/CommonTools/ExpressionEvaluation/CMakeLists.txt
@@ -22,4 +22,5 @@ atlas_add_test( ExpressionParser_test
                 SOURCES test/ExpressionParser_test.cxx
                 LINK_LIBRARIES AthenaKernel ExpressionEvaluationLib GaudiKernel StoreGateLib TestTools xAODMuon xAODTracking
                 POST_EXEC_SCRIPT nopost.sh
+                PROPERTIES TIMEOUT 300
                 ENVIRONMENT "JOBOPTSEARCHPATH=${CMAKE_CURRENT_SOURCE_DIR}/share" )