diff --git a/jwt/claims.go b/jwt/claims.go
index 32d499f..2f4f2e1 100644
--- a/jwt/claims.go
+++ b/jwt/claims.go
@@ -27,8 +27,8 @@
 	return nil
 }
 
-func within(cur, delta, max float64) bool {
-	return cur+delta < max || cur-delta < max
+func within(val, delta, max float64) bool {
+	return val > max+delta || val > max-delta
 }
 
 // Get retrieves the value corresponding with key from the Claims.
diff --git a/jwt/jwt.go b/jwt/jwt.go
index dbbf03d..ed41220 100644
--- a/jwt/jwt.go
+++ b/jwt/jwt.go
@@ -1,10 +1,6 @@
 package jwt
 
-import (
-	"fmt"
-
-	"github.com/SermoDigital/jose/crypto"
-)
+import "github.com/SermoDigital/jose/crypto"
 
 // JWT represents a JWT per RFC 7519.
 // It's described as an interface instead of a physical structure
@@ -59,7 +55,6 @@
 func (v *Validator) Validate(j JWT) error {
 	if iss, ok := v.Expected.Issuer(); ok &&
 		j.Claims().Get("iss") != iss {
-		fmt.Println(iss, j.Claims().Get("iss"))
 		return ErrInvalidISSClaim
 	}
 	if sub, ok := v.Expected.Subject(); ok &&