diff --git a/app/src/main/kotlin/com/simplemobiletools/calculator/helpers/CalculatorImpl.kt b/app/src/main/kotlin/com/simplemobiletools/calculator/helpers/CalculatorImpl.kt
index 4cfbef4d..6612b454 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calculator/helpers/CalculatorImpl.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calculator/helpers/CalculatorImpl.kt
@@ -63,7 +63,6 @@ class CalculatorImpl(calculator: Calculator, val context: Context) {
 
         when {
             sign == "√" -> setFormula(sign + first)
-            sign == "!" -> setFormula(first + sign)
             sign.isNotEmpty() -> {
                 if (secondValue.compareTo(BigDecimal.ZERO) == 0 && sign == "/") {
                     context.toast(context.getString(R.string.formula_divide_by_zero_error))