diff --git a/internal/calc/calc.go b/internal/calc/calc.go
index b38278e..47710a9 100644
--- a/internal/calc/calc.go
+++ b/internal/calc/calc.go
@@ -2,7 +2,6 @@ package calc
 
 import (
 	"errors"
-	"fmt"
 	"math"
 	"strconv"
 	"strings"