diff --git a/Source/Modules/csharp.cxx b/Source/Modules/csharp.cxx
index 31c946460..619a837c9 100644
--- a/Source/Modules/csharp.cxx
+++ b/Source/Modules/csharp.cxx
@@ -1491,7 +1491,7 @@ public:
 
     if (GetFlag(attributes, "tmap:csbase:replace")) {
       wanted_base = pure_baseclass;
-      derived = *Char(wanted_base);
+      derived = *Char(wanted_base) ? true : false;
       Delete(baseclass);
       baseclass = NULL;
     } else if (Len(pure_baseclass) > 0 && Len(baseclass) > 0) {
diff --git a/Source/Modules/java.cxx b/Source/Modules/java.cxx
index b4e0ccad8..4430a29bf 100644
--- a/Source/Modules/java.cxx
+++ b/Source/Modules/java.cxx
@@ -1558,7 +1558,7 @@ public:
 
     if (GetFlag(attributes, "tmap:javabase:replace")) {
       wanted_base = pure_baseclass;
-      derived = *Char(wanted_base);
+      derived = *Char(wanted_base) ? true : false;
       Delete(baseclass);
       baseclass = NULL;
     } else if (Len(pure_baseclass) > 0 && Len(baseclass) > 0) {