diff --git a/org.adempiere.base/src/org/compiere/model/MInfoWindow.java b/org.adempiere.base/src/org/compiere/model/MInfoWindow.java
index 3cb5124094..5ef35477cd 100644
--- a/org.adempiere.base/src/org/compiere/model/MInfoWindow.java
+++ b/org.adempiere.base/src/org/compiere/model/MInfoWindow.java
@@ -170,8 +170,8 @@ public class MInfoWindow extends X_AD_InfoWindow
 		Iterator<MInfoProcess> iterator = lsInfoProcess.iterator();
 		while (iterator.hasNext()){
 			MInfoProcess testInfoProcess = iterator.next();
-			// need more review
-			if (MRole.getDefault().getProcessAccess(testInfoProcess.getAD_Process_ID()) == null){
+			Boolean access = MRole.getDefault().getProcessAccess(testInfoProcess.getAD_Process_ID());
+			if (access == null || !access.booleanValue()) {
 				iterator.remove();
 			}
 		}
diff --git a/org.adempiere.server/src/main/servlet/org/adempiere/web/server/command/ExecuteProcessCommand.java b/org.adempiere.server/src/main/servlet/org/adempiere/web/server/command/ExecuteProcessCommand.java
index f80cbeeda3..4263ae8988 100644
--- a/org.adempiere.server/src/main/servlet/org/adempiere/web/server/command/ExecuteProcessCommand.java
+++ b/org.adempiere.server/src/main/servlet/org/adempiere/web/server/command/ExecuteProcessCommand.java
@@ -57,7 +57,8 @@ public class ExecuteProcessCommand extends ServerResource {
 		String procedureName = (String) entity.get("procedureName");
 		
 		MRole role = MRole.get(context, Env.getAD_Role_ID(context), Env.getAD_User_ID(context), false);
-		if (!role.getProcessAccess(pi.getAD_Process_ID())) {
+    	Boolean access = role.getProcessAccess(pi.getAD_Process_ID());
+    	if (access == null || !access.booleanValue()) {
 			throw new AdempiereException("Access denied.");
 		}
 		
diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java
index d58d8ab447..3f127b3629 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java
@@ -62,6 +62,7 @@ import org.compiere.model.GridWindow;
 import org.compiere.model.I_AD_Preference;
 import org.compiere.model.MLookup;
 import org.compiere.model.MPreference;
+import org.compiere.model.MRole;
 import org.compiere.model.MTab;
 import org.compiere.model.MTable;
 import org.compiere.model.MToolBarButton;
@@ -632,8 +633,11 @@ DataStatusListener, IADTabpanel, IdSpace, IFieldEditorContainer
 		//get extra toolbar process buttons
         MToolBarButton[] mToolbarButtons = MToolBarButton.getProcessButtonOfTab(gridTab.getAD_Tab_ID(), null);
         for(MToolBarButton mToolbarButton : mToolbarButtons) {
-        	ToolbarProcessButton toolbarProcessButton = new ToolbarProcessButton(mToolbarButton, this, windowPanel, windowNo);
-        	toolbarProcessButtons.add(toolbarProcessButton);
+        	Boolean access = MRole.getDefault().getProcessAccess(mToolbarButton.getAD_Process_ID());
+        	if (access != null && access.booleanValue()) {
+        		ToolbarProcessButton toolbarProcessButton = new ToolbarProcessButton(mToolbarButton, this, windowPanel, windowNo);
+        		toolbarProcessButtons.add(toolbarProcessButton);
+        	}
         }
         
         if (toolbarProcessButtons.size() > 0) {