diff --git a/main.go b/main.go
index 6f9339f..da7751d 100644
--- a/main.go
+++ b/main.go
@@ -67,8 +67,11 @@ func initialModel(fullscreen bool, colorLeft string, colorRight string) model {
 	}
 
 	validateInt := func(text string) error {
-		_, err := strconv.Atoi(text)
-		return fmt.Errorf("invalid int input: %w", err)
+		if _, err := strconv.Atoi(text); err != nil {
+			return fmt.Errorf("invalid int input: %w", err)
+		}
+
+		return nil
 	}
 
 	inputs[0].Placeholder = "Interval length (minutes or duration)"