diff --git a/companion/src/modeledit/expodialog.cpp b/companion/src/modeledit/expodialog.cpp
index a287e578c..f66c34dec 100644
--- a/companion/src/modeledit/expodialog.cpp
+++ b/companion/src/modeledit/expodialog.cpp
@@ -240,7 +240,7 @@ void ExpoDialog::fmInvertAll()
 {
   lock = true;
   for (int i=0; i<CPN_MAX_FLIGHT_MODES; i++) {
-    cb_fp[i]->setChecked(not cb_fp[i]->checkState());
+    cb_fp[i]->setChecked(!cb_fp[i]->isChecked());
   }
   lock = false;
   valuesChanged();
diff --git a/companion/src/modeledit/mixerdialog.cpp b/companion/src/modeledit/mixerdialog.cpp
index 6cb33f25c..e061b74de 100644
--- a/companion/src/modeledit/mixerdialog.cpp
+++ b/companion/src/modeledit/mixerdialog.cpp
@@ -239,7 +239,7 @@ void MixerDialog::fmInvertAll()
 {
   lock = true;
   for (int i=0; i<CPN_MAX_FLIGHT_MODES; i++) {
-    cb_fp[i]->setChecked(not cb_fp[i]->checkState());
+    cb_fp[i]->setChecked(!cb_fp[i]->isChecked());
   }
   lock = false;
   valuesChanged();