diff --git a/parttypes.cc b/parttypes.cc
index 721e8ff..ae7094d 100644
--- a/parttypes.cc
+++ b/parttypes.cc
@@ -259,7 +259,7 @@
    } // while
    if (!found) {
       // Assign a default value....
-      operator=(DEFAULT_TYPE);
+      operator=(DEFAULT_GPT_TYPE);
       cout.setf(ios::uppercase);
       cout.fill('0');
       cout << "Exact type match not found for type code ";