diff --git a/kcalc.cpp b/kcalc.cpp
--- a/kcalc.cpp
+++ b/kcalc.cpp
@@ -1728,7 +1728,6 @@
 
 	action_constants_show_->setChecked(false);
 	action_constants_show_->setEnabled(false);
-	action_bitset_show_->setChecked(false);
 	action_bitset_show_->setEnabled(false);
 	showMemButtons(false);
 	showScienceButtons(false);
@@ -1751,6 +1750,9 @@
 	constants_menu_ = 0;
 
 	KCalcSettings::setCalculatorMode(KCalcSettings::EnumCalculatorMode::simple);
+	// must be done after setting the calculator mode because the
+	// slotBitsetshow slot should save the state only in numeral mode
+	action_bitset_show_->setChecked(false);
 }
 
 //------------------------------------------------------------------------------
@@ -1761,7 +1763,6 @@
 
 	action_constants_show_->setEnabled(true);
 	action_constants_show_->setChecked(KCalcSettings::showConstants());
-	action_bitset_show_->setChecked(false);
 	action_bitset_show_->setEnabled(false);
 
 	// show some individual buttons
@@ -1787,6 +1788,9 @@
 	}
 
 	KCalcSettings::setCalculatorMode(KCalcSettings::EnumCalculatorMode::science);
+	// must be done after setting the calculator mode because the
+	// slotBitsetshow slot should save the state only in numeral mode
+	action_bitset_show_->setChecked(false);
 }
 
 //------------------------------------------------------------------------------
@@ -1797,7 +1801,6 @@
 
 	action_constants_show_->setEnabled(true);
 	action_constants_show_->setChecked(KCalcSettings::showConstants());
-	action_bitset_show_->setChecked(false);
 	action_bitset_show_->setEnabled(false);
 
 	// show some individual buttons
@@ -1823,6 +1826,9 @@
 	}
 
 	KCalcSettings::setCalculatorMode(KCalcSettings::EnumCalculatorMode::statistics);
+	// must be done after setting the calculator mode because the
+	// slotBitsetshow slot should save the state only in numeral mode
+	action_bitset_show_->setChecked(false);
 }
 
 //------------------------------------------------------------------------------
@@ -2005,7 +2011,8 @@
 void KCalculator::slotBitsetshow(bool toggled) {
 
 	mBitset->setVisible(toggled);
-	KCalcSettings::setShowBitset(toggled);
+	if (KCalcSettings::calculatorMode() == KCalcSettings::EnumCalculatorMode::numeral)
+		KCalcSettings::setShowBitset(toggled);
 }
 
 //------------------------------------------------------------------------------