diff --git a/src/gtk/textctrl.cpp b/src/gtk/textctrl.cpp
index d7e77bbc56..7373c0ad2c 100644
--- a/src/gtk/textctrl.cpp
+++ b/src/gtk/textctrl.cpp
@@ -414,7 +414,7 @@ void wxTextCtrl::SetInsertionPointEnd()
     pos = gtk_text_get_length( GTK_TEXT(m_text) );
   else
     pos = GTK_ENTRY(m_text)->text_length;
-  SetInsertionPoint( pos-1 );
+  SetInsertionPoint((pos-1)>0 ? (pos-1):0);
 }
 
 void wxTextCtrl::SetEditable( bool editable )
diff --git a/src/gtk1/textctrl.cpp b/src/gtk1/textctrl.cpp
index d7e77bbc56..7373c0ad2c 100644
--- a/src/gtk1/textctrl.cpp
+++ b/src/gtk1/textctrl.cpp
@@ -414,7 +414,7 @@ void wxTextCtrl::SetInsertionPointEnd()
     pos = gtk_text_get_length( GTK_TEXT(m_text) );
   else
     pos = GTK_ENTRY(m_text)->text_length;
-  SetInsertionPoint( pos-1 );
+  SetInsertionPoint((pos-1)>0 ? (pos-1):0);
 }
 
 void wxTextCtrl::SetEditable( bool editable )