diff --git a/com.ibm.wala.core/src/com/ibm/wala/classLoader/Language.java b/com.ibm.wala.core/src/com/ibm/wala/classLoader/Language.java
index 284a8cd61..64d278caf 100644
--- a/com.ibm.wala.core/src/com/ibm/wala/classLoader/Language.java
+++ b/com.ibm.wala.core/src/com/ibm/wala/classLoader/Language.java
@@ -17,6 +17,10 @@ public interface Language {
       return TypeReference.JavaLangObject;
     }
 
+    public TypeReference getThrowableType() {
+      return TypeReference.JavaLangThrowable;
+    }
+
     public TypeReference getConstantType(Object o) {
       if (o instanceof String) {
         return TypeReference.JavaLangString;
@@ -43,6 +47,8 @@ public interface Language {
 
   TypeReference getRootType();
 
+  TypeReference getThrowableType();
+
   TypeReference getConstantType(Object o);
 
   boolean isNullType(TypeReference type);
diff --git a/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/SSAPropagationCallGraphBuilder.java b/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/SSAPropagationCallGraphBuilder.java
index 2371edb45..7c04254f6 100644
--- a/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/SSAPropagationCallGraphBuilder.java
+++ b/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/SSAPropagationCallGraphBuilder.java
@@ -334,7 +334,9 @@ public abstract class SSAPropagationCallGraphBuilder extends PropagationCallGrap
     List<ProgramCounter> peis = getIncomingPEIs(ir, ir.getExitBlock());
     PointerKey exception = getPointerKeyForExceptionalReturnValue(node);
 
-    IClass c = node.getClassHierarchy().lookupClass(TypeReference.JavaLangThrowable);
+    TypeReference throwableType = 
+      node.getMethod().getDeclaringClass().getClassLoader().getLanguage().getThrowableType();
+    IClass c = node.getClassHierarchy().lookupClass(throwableType);
     addExceptionDefConstraints(ir, du, node, peis, exception, Collections.singleton(c));
   }