diff --git a/CHANGES.current b/CHANGES.current
index 8a3bb9ce7..70439b221 100644
--- a/CHANGES.current
+++ b/CHANGES.current
@@ -7,6 +7,10 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
 Version 4.0.0 (in progress)
 ===========================
 
+2017-05-21: Sghirate
+            [Java, C#, D] #449 Remove unnecessary use of dynamic_cast in directors to enable
+            non-RTTI compilation.
+
 2017-05-21: wsfulton
             [Python] #993 Fix handling of default -ve unsigned values, such as:
               void f(unsigned = -1U);
diff --git a/Source/Modules/csharp.cxx b/Source/Modules/csharp.cxx
index bbc1b8ac6..fc682365c 100644
--- a/Source/Modules/csharp.cxx
+++ b/Source/Modules/csharp.cxx
@@ -2225,7 +2225,7 @@ public:
 	Printf(dcast_wrap->code, "  Swig::Director *director = (Swig::Director *) 0;\n");
 	Printf(dcast_wrap->code, "  jobject jresult = (jobject) 0;\n");
 	Printf(dcast_wrap->code, "  %s *obj = *((%s **)&jCPtrBase);\n", norm_name, norm_name);
-	Printf(dcast_wrap->code, "  if (obj) director = static_cast<Swig::Director *>(obj);\n");
+	Printf(dcast_wrap->code, "  if (obj) director = dynamic_cast<Swig::Director *>(obj);\n");
 	Printf(dcast_wrap->code, "  if (director) jresult = director->swig_get_self(jenv);\n");
 	Printf(dcast_wrap->code, "  return jresult;\n");
 	Printf(dcast_wrap->code, "}\n");
@@ -3735,15 +3735,12 @@ public:
       Printf(code_wrap->code, "  // Keep a local instance of the smart pointer around while we are using the raw pointer\n");
       Printf(code_wrap->code, "  // Avoids using smart pointer specific API.\n");
       Printf(code_wrap->code, "  %s *director = static_cast<%s *>(obj->operator->());\n", dirClassName, dirClassName);
-    }
-    else {
+    } else {
       Printf(code_wrap->code, "  %s *obj = (%s *)objarg;\n", norm_name, norm_name);
       Printf(code_wrap->code, "  %s *director = static_cast<%s *>(obj);\n", dirClassName, dirClassName);
     }
 
-    // TODO: if statement not needed?? - Java too
-    Printf(code_wrap->code, "  if (director) {\n");
-    Printf(code_wrap->code, "    director->swig_connect_director(");
+    Printf(code_wrap->code, "  director->swig_connect_director(");
 
     for (int i = first_class_dmethod; i < curr_class_dmethod; ++i) {
       UpcallData *udata = Getitem(dmethods_seq, i);
@@ -3760,7 +3757,6 @@ public:
     Printf(code_wrap->def, ") {\n");
     Printf(code_wrap->code, ");\n");
     Printf(imclass_class_code, ");\n");
-    Printf(code_wrap->code, "  }\n");
     Printf(code_wrap->code, "}\n");
 
     Wrapper_print(code_wrap, f_wrappers);
diff --git a/Source/Modules/d.cxx b/Source/Modules/d.cxx
index dd0fc371f..9a64543c3 100644
--- a/Source/Modules/d.cxx
+++ b/Source/Modules/d.cxx
@@ -3567,10 +3567,9 @@ private:
     Printf(code_wrap->def, "SWIGEXPORT void D_%s(void *objarg, void *dobj", connect_name);
 
     Printf(code_wrap->code, "  %s *obj = (%s *)objarg;\n", norm_name, norm_name);
-    Printf(code_wrap->code, "  %s *director = dynamic_cast<%s *>(obj);\n", dirClassName, dirClassName);
+    Printf(code_wrap->code, "  %s *director = static_cast<%s *>(obj);\n", dirClassName, dirClassName);
 
-    Printf(code_wrap->code, "  if (director) {\n");
-    Printf(code_wrap->code, "    director->swig_connect_director(dobj");
+    Printf(code_wrap->code, "  director->swig_connect_director(dobj");
 
     for (int i = first_class_dmethod; i < curr_class_dmethod; ++i) {
       UpcallData *udata = Getitem(dmethods_seq, i);
@@ -3584,7 +3583,6 @@ private:
     Printf(code_wrap->def, ") {\n");
     Printf(code_wrap->code, ");\n");
     Printf(im_dmodule_code, ") %s;\n", connect_name);
-    Printf(code_wrap->code, "  }\n");
     Printf(code_wrap->code, "}\n");
 
     Wrapper_print(code_wrap, f_wrappers);
diff --git a/Source/Modules/java.cxx b/Source/Modules/java.cxx
index e53cf1576..75fe61c2b 100644
--- a/Source/Modules/java.cxx
+++ b/Source/Modules/java.cxx
@@ -3760,18 +3760,16 @@ public:
       Printf(code_wrap->code, "  (void)jcls;\n");
       Printf(code_wrap->code, "  // Keep a local instance of the smart pointer around while we are using the raw pointer\n");
       Printf(code_wrap->code, "  // Avoids using smart pointer specific API.\n");
-      Printf(code_wrap->code, "  %s *director = dynamic_cast<%s *>(obj->operator->());\n", dirClassName, dirClassName);
+      Printf(code_wrap->code, "  %s *director = static_cast<%s *>(obj->operator->());\n", dirClassName, dirClassName);
     }
     else {
       Printf(code_wrap->code, "  %s *obj = *((%s **)&objarg);\n", norm_name, norm_name);
       Printf(code_wrap->code, "  (void)jcls;\n");
-      Printf(code_wrap->code, "  %s *director = dynamic_cast<%s *>(obj);\n", dirClassName, dirClassName); 
+      Printf(code_wrap->code, "  %s *director = static_cast<%s *>(obj);\n", dirClassName, dirClassName); 
     }
 
-    Printf(code_wrap->code, "  if (director) {\n");
-    Printf(code_wrap->code, "    director->swig_connect_director(jenv, jself, jenv->GetObjectClass(jself), "
+    Printf(code_wrap->code, "  director->swig_connect_director(jenv, jself, jenv->GetObjectClass(jself), "
 	   "(jswig_mem_own == JNI_TRUE), (jweak_global == JNI_TRUE));\n");
-    Printf(code_wrap->code, "  }\n");
     Printf(code_wrap->code, "}\n");
 
     Wrapper_print(code_wrap, f_wrappers);
@@ -3791,11 +3789,9 @@ public:
 	   "SWIGEXPORT void JNICALL Java_%s%s_%s(JNIEnv *jenv, jclass jcls, jobject jself, jlong objarg, jboolean jtake_or_release) {\n",
 	   jnipackage, jni_imclass_name, changeown_jnimethod_name);
     Printf(code_wrap->code, "  %s *obj = *((%s **)&objarg);\n", norm_name, norm_name);
-    Printf(code_wrap->code, "  %s *director = dynamic_cast<%s *>(obj);\n", dirClassName, dirClassName);
+    Printf(code_wrap->code, "  %s *director = static_cast<%s *>(obj);\n", dirClassName, dirClassName);
     Printf(code_wrap->code, "  (void)jcls;\n");
-    Printf(code_wrap->code, "  if (director) {\n");
-    Printf(code_wrap->code, "    director->swig_java_change_ownership(jenv, jself, jtake_or_release ? true : false);\n");
-    Printf(code_wrap->code, "  }\n");
+    Printf(code_wrap->code, "  director->swig_java_change_ownership(jenv, jself, jtake_or_release ? true : false);\n");
     Printf(code_wrap->code, "}\n");
 
     Wrapper_print(code_wrap, f_wrappers);