diff --git a/cmd/version.txt b/cmd/version.txt
index 99b953e..ef50561 100644
--- a/cmd/version.txt
+++ b/cmd/version.txt
@@ -1 +1 @@
-0.8.10-git
+0.8.10
diff --git a/internal/config/config.default.json b/internal/config/config.default.json
index baaa522..494492a 100644
--- a/internal/config/config.default.json
+++ b/internal/config/config.default.json
@@ -34,6 +34,7 @@
       "show_generic": false
     },
     "calc": {
+      "require_number": true,
       "weight": 5,
       "name": "calc",
       "icon": "accessories-calculator",
diff --git a/internal/config/config.go b/internal/config/config.go
index 5441941..80bc891 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -72,6 +72,7 @@ type Builtins struct {
 
 type Calc struct {
 	GeneralModule `mapstructure:",squash"`
+	RequireNumber bool `mapstructure:"require_number"`
 }
 
 type CustomCommands struct {
diff --git a/internal/modules/calc.go b/internal/modules/calc.go
index 0235b5b..c2e740a 100644
--- a/internal/modules/calc.go
+++ b/internal/modules/calc.go
@@ -5,14 +5,16 @@ import (
 	"log"
 	"os/exec"
 	"strings"
+	"unicode"
 
 	"github.com/abenz1267/walker/internal/config"
 	"github.com/abenz1267/walker/internal/util"
 )
 
 type Calc struct {
-	general config.GeneralModule
-	hasClip bool
+	general       config.GeneralModule
+	requireNumber bool
+	hasClip       bool
 }
 
 func (c *Calc) General() *config.GeneralModule {
@@ -35,6 +37,7 @@ func (c *Calc) Setup(cfg *config.Config) bool {
 
 	c.general = cfg.Builtins.Calc.GeneralModule
 	c.general.IsSetup = true
+	c.requireNumber = cfg.Builtins.Calc.RequireNumber
 
 	// to update exchange rates
 	cmd := exec.Command("qalc", "-e", "1+1")
@@ -46,6 +49,18 @@ func (c *Calc) Setup(cfg *config.Config) bool {
 func (c *Calc) SetupData(cfg *config.Config, ctx context.Context) {}
 
 func (c Calc) Entries(ctx context.Context, term string) []util.Entry {
+	hasNumber := false
+
+	for _, c := range term {
+		if unicode.IsDigit(c) {
+			hasNumber = true
+		}
+	}
+
+	if !hasNumber {
+		return []util.Entry{}
+	}
+
 	entries := []util.Entry{}
 
 	cmd := exec.Command("qalc", "-t", term)