diff --git a/src/gui_qt/data/container.py b/src/gui_qt/data/container.py
index 3a38aba..71bf9f4 100644
--- a/src/gui_qt/data/container.py
+++ b/src/gui_qt/data/container.py
@@ -777,12 +777,18 @@ class SignalContainer(ExperimentContainer):
         if apod[0] is not None:
             self._data.apod(*apod)
 
-        if fourier[0] is not None:
-            if fourier[0]:
-                if phase[0] is not None:
-                    self._data.manual_phase(*phase)
-                self.fourier()
-            else:
-                self.fourier()
-                if phase[0] is not None:
-                    self._data.manual_phase(*phase)
+        # ft with three options: None, True, False
+        if fourier[0] is None:
+            # ft None -> only phase correct
+            if phase[0] is not None:
+                self._data.manual_phase(*phase)
+        elif fourier[0] == True:
+            # ft True -> first phase correct then fft
+            if phase[0] is not None:
+                self._data.manual_phase(*phase)
+            self.fourier()
+        else:
+            # ft False -> first fft then phase correct
+            self.fourier()
+            if phase[0] is not None:
+                self._data.manual_phase(*phase)
\ No newline at end of file