diff --git a/serverRoot/src/main/server/org/compiere/server/WorkflowProcessor.java b/serverRoot/src/main/server/org/compiere/server/WorkflowProcessor.java
index 120bd0c0be..77badf9707 100644
--- a/serverRoot/src/main/server/org/compiere/server/WorkflowProcessor.java
+++ b/serverRoot/src/main/server/org/compiere/server/WorkflowProcessor.java
@@ -87,7 +87,7 @@ public class WorkflowProcessor extends AdempiereServer
 				+ " INNER JOIN AD_WF_Node wfn ON (wf.AD_Workflow_ID=wfn.AD_Workflow_ID) "
 				+ "WHERE a.AD_WF_Node_ID=wfn.AD_WF_Node_ID"
 				+ " AND wfn.Action='Z'"		//	sleeping
-				+ " AND wf.AD_WorkflowProcessor_ID IS NULL OR wf.AD_WorkflowProcessor_ID=?)";
+				+ " AND (wf.AD_WorkflowProcessor_ID IS NULL OR wf.AD_WorkflowProcessor_ID=?))";
 		PreparedStatement pstmt = null;
 		int count = 0;
 		int countEMails = 0;