diff --git a/calculator/calculator.app.js b/calculator/calculator.app.js
index 32bd454..fa51fa5 100644
--- a/calculator/calculator.app.js
+++ b/calculator/calculator.app.js
@@ -536,7 +536,7 @@ function buttonPress(val) {
       if (!swipeEnabled) drawKey('R', specials.R);
       const is0Negative = (currNumber === 0 && 1/currNumber === -Infinity);
       if (isDecimal) {
-        currNumber = currNumber == null || hasPressedEquals === 1 ? 0 + '.' + val : currNumber + '.' + val;
+        currNumber = currNumber == null || hasPressedEquals === 1 ? '0.' + val : parseInt(currNumber, 10) + '.' + val;
         isDecimal = false;
       } else {
         currNumber = currNumber == null || hasPressedEquals === 1 ? val : (is0Negative ? '-' + val : currNumber + val);