diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index b3c6400..6fb985f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -14,6 +14,12 @@ jobs:
         with:
           version: latest
 
+          # Only block PRs on new problems.
+          # If this is not enabled, we will end up having PRs
+          # blocked because new linters has appared and other
+          # parts of the code is affected.
+          only-new-issues: true
+
   prettier-lint:
     runs-on: ubuntu-latest
     steps:
diff --git a/app.go b/app.go
index b9d570c..3ba384b 100644
--- a/app.go
+++ b/app.go
@@ -724,7 +724,8 @@ func readOrCreatePrivateKey(path string) (*key.MachinePrivate, error) {
 		return nil, fmt.Errorf("failed to read private key file: %w", err)
 	}
 
-	privateKeyEnsurePrefix := PrivateKeyEnsurePrefix(string(privateKey))
+	trimmedPrivateKey := strings.TrimSpace(string(privateKey))
+	privateKeyEnsurePrefix := PrivateKeyEnsurePrefix(trimmedPrivateKey)
 
 	var machineKey key.MachinePrivate
 	if err = machineKey.UnmarshalText([]byte(privateKeyEnsurePrefix)); err != nil {