diff --git a/javafx-template/src/main/java/app/Calc.java b/javafx-template/src/main/java/app/Calc.java
index 231878c..6c740f4 100644
--- a/javafx-template/src/main/java/app/Calc.java
+++ b/javafx-template/src/main/java/app/Calc.java
@@ -89,8 +89,8 @@ public class Calc {
         if (getOperandCount() < 2) {
             throw new IllegalStateException("Too few operands (" + getOperandCount() + ") on the stack");
         }
-        var op1 = popOperand();
         var op2 = popOperand();
+        var op1 = popOperand();
         var result = op.apply(op1, op2);
         pushOperand(result);
         return result;
diff --git a/modules-template/core/src/main/java/core/Calc.java b/modules-template/core/src/main/java/core/Calc.java
index 9b0f4c9..ed63b11 100644
--- a/modules-template/core/src/main/java/core/Calc.java
+++ b/modules-template/core/src/main/java/core/Calc.java
@@ -85,8 +85,8 @@ public class Calc {
         if (getOperandCount() < 2) {
             throw new IllegalStateException("Too few operands (" + getOperandCount() + ") on the stack");
         }
-        var op1 = popOperand();
         var op2 = popOperand();
+        var op1 = popOperand();
         var result = op.apply(op1, op2);
         pushOperand(result);
         return result;
diff --git a/modules-template/ui/pom.xml b/modules-template/ui/pom.xml
index 8bc1cfe..0660fec 100644
--- a/modules-template/ui/pom.xml
+++ b/modules-template/ui/pom.xml
@@ -1,7 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>it1901</groupId>
     <artifactId>modules-ui</artifactId>
 
     <parent>
diff --git a/packages-template/src/main/java/core/Calc.java b/packages-template/src/main/java/core/Calc.java
index 9b0f4c9..ed63b11 100644
--- a/packages-template/src/main/java/core/Calc.java
+++ b/packages-template/src/main/java/core/Calc.java
@@ -85,8 +85,8 @@ public class Calc {
         if (getOperandCount() < 2) {
             throw new IllegalStateException("Too few operands (" + getOperandCount() + ") on the stack");
         }
-        var op1 = popOperand();
         var op2 = popOperand();
+        var op1 = popOperand();
         var result = op.apply(op1, op2);
         pushOperand(result);
         return result;