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-rw-r--r--vcl/unx/gtk/app/gtksys.cxx2
1 files changed, 1 insertions, 1 deletions
diff --git a/vcl/unx/gtk/app/gtksys.cxx b/vcl/unx/gtk/app/gtksys.cxx
index 3927dbf7fc0a..538107f3f579 100644
--- a/vcl/unx/gtk/app/gtksys.cxx
+++ b/vcl/unx/gtk/app/gtksys.cxx
@@ -92,7 +92,7 @@ GtkSalSystem::getScreenMonitorFromIdx (GdkDisplay *pDisplay, int nIdx, gint &nMo
pScreen = gdk_display_get_screen (pDisplay, i);
if (!pScreen)
break;
- if (nIdx > gdk_screen_get_n_monitors (pScreen))
+ if (nIdx >= gdk_screen_get_n_monitors (pScreen))
nIdx -= gdk_screen_get_n_monitors (pScreen);
else
break;