diff --git a/src/fat16.cc b/src/fat16.cc
index 6e254db4..19871925 100644
--- a/src/fat16.cc
+++ b/src/fat16.cc
@@ -265,9 +265,15 @@ const Glib::ustring fat16::sanitize_label( const Glib::ustring &label ) const
 	//     https://technet.microsoft.com/en-us/library/bb490925.aspx
 	// [2] Replicated in Wikikedia: label (command)
 	//     https://en.wikipedia.org/wiki/Label_%28command%29
-	Glib::ustring prohibited_chars( "*?.,;:/\\|+=<>[]" );
+	// Also exclude:
+	// * Single quote (') because it is encoded by mlabel but not understood by
+	//   Windows;
+	// * ASCII control characters below SPACE because mlabel requests input in the
+	//   same way it does for prohibited characters causing GParted to wait forever.
+	Glib::ustring prohibited_chars( "*?.,;:/\\|+=<>[]\"'" );
 	for ( unsigned int i = 0 ; i < uppercase_label.size() ; i ++ )
-		if ( prohibited_chars.find( uppercase_label[i] ) == Glib::ustring::npos )
+		if ( prohibited_chars.find( uppercase_label[i] ) == Glib::ustring::npos &&
+		     uppercase_label[i] >= ' '                                             )
 			new_label.push_back( uppercase_label[i] );
 
 	// Pad with spaces to prevent mlabel writing corrupted labels.  See bug #700228.