diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TestBase.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TestBase.java
index afb76a90c9d..54928023f80 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TestBase.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TestBase.java
@@ -110,6 +110,7 @@ public class AST2TestBase extends BaseTestCase {
 		map.put("__SIZEOF_SHORT__", "2");
 		map.put("__SIZEOF_INT__", "4");
 		map.put("__SIZEOF_LONG__", "8");
+		map.put("__SIZEOF_POINTER__", "8");
 		return map;
 	}
 
@@ -118,6 +119,7 @@ public class AST2TestBase extends BaseTestCase {
 		map.put("__SIZEOF_SHORT__", "2");
 		map.put("__SIZEOF_INT__", "4");
 		map.put("__SIZEOF_LONG__", "8");
+		map.put("__SIZEOF_POINTER__", "8");
 		return map;
 	}