diff --git a/xtandempipeline/src/fr/inra/pappso/xtandempipeline/ui/swt/Filter_Windows.java b/xtandempipeline/src/fr/inra/pappso/xtandempipeline/ui/swt/Filter_Windows.java
index e9562100f9862cff602c575cf9da02434edf3be7..a40ecffb64334683fe3d9b2fa283e73c4f4e7f7c 100644
--- a/xtandempipeline/src/fr/inra/pappso/xtandempipeline/ui/swt/Filter_Windows.java
+++ b/xtandempipeline/src/fr/inra/pappso/xtandempipeline/ui/swt/Filter_Windows.java
@@ -124,7 +124,7 @@ public class Filter_Windows {
 		mascotEvalue.setLayout(new GridLayout(1, false));
 		
 	    theoriticalButton = new Button(mascotEvalue, SWT.RADIO);
-	    theoriticalButton.setText("Theoritical (The ion score threshold is the same for all spectra)");
+	    theoriticalButton.setText("Theoretical (The ion score threshold is the same for all spectra)");
 		theoriticalButton.setSelection(conf.get_mascot_evalue_theoritical());
 	    Button experimentalButton = new Button(mascotEvalue, SWT.RADIO);
 	    experimentalButton.setText("Experimental (The ion score threshold depend of the spectra)");