diff --git a/lib/java/src/org/apache/thrift/ProcessFunction.java b/lib/java/src/org/apache/thrift/ProcessFunction.java
index 2ba3527..19c8f14 100644
--- a/lib/java/src/org/apache/thrift/ProcessFunction.java
+++ b/lib/java/src/org/apache/thrift/ProcessFunction.java
@@ -37,8 +37,8 @@
 
     try {
       result = getResult(iface, args);
-    } catch(Throwable th) {
-      LOGGER.error("Internal error processing " + getMethodName(), th);
+    } catch(TException tex) {
+      LOGGER.error("Internal error processing " + getMethodName(), tex);
       TApplicationException x = new TApplicationException(TApplicationException.INTERNAL_ERROR, 
         "Internal error processing " + getMethodName());
       oprot.writeMessageBegin(new TMessage(getMethodName(), TMessageType.EXCEPTION, seqid));