diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassSpecialization.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassSpecialization.java
index 572af360ee1..49b08a96e45 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassSpecialization.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassSpecialization.java
@@ -85,7 +85,7 @@ public class CPPClassSpecialization extends CPPSpecialization implements
 				ICPPBase specBinding = (ICPPBase) ((ICPPInternalBase)binding).clone();
     		    IBinding base = binding.getBaseClass();
     		    if (base instanceof IType) {
-    		    	IType specBase = CPPTemplates.instantiateType((IType) base, argumentMap, getScope());
+    		    	IType specBase = CPPTemplates.instantiateType((IType) base, argumentMap, specScope);
     		    	specBase = SemanticUtil.getUltimateType(specBase, false);
     		    	if (specBase instanceof IBinding && !(specBase instanceof IProblemBinding)) {
     		    		((ICPPInternalBase)specBinding).setBaseClass((IBinding)specBase);
@@ -105,7 +105,7 @@ public class CPPClassSpecialization extends CPPSpecialization implements
 			bindings[i] = new CPPBaseClause(bases[i]);
 			IBinding base = bindings[i].getBaseClass();
 			if (base instanceof IType) {
-				IType specBase = CPPTemplates.instantiateType((IType) base, argumentMap, null);
+				IType specBase = CPPTemplates.instantiateType((IType) base, argumentMap, specScope);
 				if (specBase instanceof ICPPClassType) {
 					((CPPBaseClause) bindings[i]).setBaseClass((ICPPClassType) specBase);
 				}
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPClassSpecialization.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPClassSpecialization.java
index f3df5aa737e..1fa4da23953 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPClassSpecialization.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPClassSpecialization.java
@@ -165,7 +165,7 @@ class PDOMCPPClassSpecialization extends PDOMCPPSpecialization implements
 					ICPPBase specBase = (ICPPBase) ((ICPPInternalBase)origBase).clone();
 					IBinding origClass = origBase.getBaseClass();
 					if (origClass instanceof IType) {
-						IType specClass = CPPTemplates.instantiateType((IType) origClass, getArgumentMap(), getScope());
+						IType specClass = CPPTemplates.instantiateType((IType) origClass, getArgumentMap(), this);
 						specClass = SemanticUtil.getUltimateType(specClass, true);
 						if (specClass instanceof IBinding) {
 							((ICPPInternalBase)specBase).setBaseClass((IBinding) specClass);