diff --git a/src/gtk/textctrl.cpp b/src/gtk/textctrl.cpp
index c3d56aaee2..255544eeda 100644
--- a/src/gtk/textctrl.cpp
+++ b/src/gtk/textctrl.cpp
@@ -1192,8 +1192,7 @@ long wxTextCtrl::XYToPosition(long x, long y ) const
 {
     if ( IsSingleLine() )
     {
-
-        if ( y != 0 || x >= GTKGetEntryTextLength(GTK_ENTRY(m_text)) )
+        if ( y != 0 || x > GTKGetEntryTextLength(GTK_ENTRY(m_text)) )
             return -1;
 
         return x;