diff --git a/bepascal/source/bepascal/cpp/src/be/app/Cursor.cpp b/bepascal/source/bepascal/cpp/src/be/app/Cursor.cpp
index 7350f1c..e053c58 100644
--- a/bepascal/source/bepascal/cpp/src/be/app/Cursor.cpp
+++ b/bepascal/source/bepascal/cpp/src/be/app/Cursor.cpp
@@ -131,12 +131,13 @@ BCursor_Instantiate(BCursor *Cursor, BMessage *data)
  * Returns: status_t
  * Effects: 
  ***********************************************************************/
+#ifndef __HAIKU__
 status_t
 BCursor_Perform(BCursor *Cursor, perform_code d, void *arg)
 {
    return Cursor->Perform(d, arg);
 }
-
+#endif
 
 
 #if defined(__cplusplus)
diff --git a/bepascal/source/bepascal/cpp/src/be/interface/Bitmap.cpp b/bepascal/source/bepascal/cpp/src/be/interface/Bitmap.cpp
index 3777539..5857732 100644
--- a/bepascal/source/bepascal/cpp/src/be/interface/Bitmap.cpp
+++ b/bepascal/source/bepascal/cpp/src/be/interface/Bitmap.cpp
@@ -288,11 +288,13 @@ BPBitmap::IsLocked(void) const
 	return BBitmap::IsLocked();
 }
 
+#ifndef __HAIKU__
 status_t
 BPBitmap::Perform(perform_code d, void *arg)
 {
 	return BBitmap::Perform(d, arg);
 }
+#endif
 
 /*-------------------------------------------------------------*/
 
diff --git a/bepascal/source/bepascal/cpp/src/be/interface/StringView.cpp b/bepascal/source/bepascal/cpp/src/be/interface/StringView.cpp
index bd7b7ce..89913d8 100644
--- a/bepascal/source/bepascal/cpp/src/be/interface/StringView.cpp
+++ b/bepascal/source/bepascal/cpp/src/be/interface/StringView.cpp
@@ -486,12 +486,13 @@ BStringView_GetSupportedSuites(BStringView *StringView, BMessage *data)
  * Returns: status_t
  * Effects: 
  ***********************************************************************/
+#ifndef __HAIKU__
 status_t
 BStringView_Perform(BStringView *StringView, perform_code d, void *arg)
 {
    return StringView->Perform(d, arg);
 }
-
+#endif
 
 /***********************************************************************
  *  Method: BStringView::_ReservedStringView1
diff --git a/bepascal/source/bepascal/cpp/src/be/interface/TextControl.cpp b/bepascal/source/bepascal/cpp/src/be/interface/TextControl.cpp
index f540b4a..b5ad333 100644
--- a/bepascal/source/bepascal/cpp/src/be/interface/TextControl.cpp
+++ b/bepascal/source/bepascal/cpp/src/be/interface/TextControl.cpp
@@ -702,12 +702,13 @@ BTextControl_SetFlags(BTextControl *TextControl, uint32 flags)
  * Returns: status_t
  * Effects: 
  ***********************************************************************/
+#ifndef __HAIKU__
 status_t
 BTextControl_Perform(BTextControl *TextControl, perform_code d, void *arg)
 {
    return TextControl->Perform(d, arg);
 }
-
+#endif
 
 /***********************************************************************
  *  Method: BTextControl::_ReservedTextControl1