diff --git a/pkg/oidc/code_challenge.go b/pkg/oidc/code_challenge.go
index 385a9070..44a04993 100644
--- a/pkg/oidc/code_challenge.go
+++ b/pkg/oidc/code_challenge.go
@@ -19,7 +19,7 @@ type CodeChallenge struct {
 }
 
 func NewSHACodeChallenge(code string) string {
-	return utils.HashString(sha256.New(), code.false)
+	return utils.HashString(sha256.New(), code, false)
 }
 
 func VerifyCodeChallenge(c *CodeChallenge, codeVerifier string) bool {