diff --git a/src/main/java/com/google/openthread/LoggerInitializer.java b/src/main/java/com/google/openthread/LoggerInitializer.java
index 6d50eee..f4af99c 100644
--- a/src/main/java/com/google/openthread/LoggerInitializer.java
+++ b/src/main/java/com/google/openthread/LoggerInitializer.java
@@ -55,5 +55,7 @@ public static void Init(boolean verbose) {
           break;
       }
     }
+
+    ((Logger)LoggerFactory.getLogger(CALIFORNIUM)).setLevel(levelLibrary);
   }
 }
diff --git a/src/main/java/com/google/openthread/main/OtRegistrarConfig.java b/src/main/java/com/google/openthread/main/OtRegistrarConfig.java
index 386ca70..2a59d27 100644
--- a/src/main/java/com/google/openthread/main/OtRegistrarConfig.java
+++ b/src/main/java/com/google/openthread/main/OtRegistrarConfig.java
@@ -45,7 +45,7 @@ static OtRegistrarConfig DefaultPledge() {
     config.domainName = null;
     config.keyStoreFile = "./credentials/default_pledge.p12";
     config.masaUri = null;
-    config.registrarUri = "localhost:5684";
+    config.registrarUri = "coaps://localhost:5684";
     config.logVerbose = false;
     return config;
   }
diff --git a/src/main/java/com/google/openthread/pledge/PledgeException.java b/src/main/java/com/google/openthread/pledge/PledgeException.java
index 22a2a85..0d8b6c2 100644
--- a/src/main/java/com/google/openthread/pledge/PledgeException.java
+++ b/src/main/java/com/google/openthread/pledge/PledgeException.java
@@ -34,12 +34,13 @@
 public class PledgeException extends Exception {
 
   /**
-   * An optional CoAP response code, from a CoAP response, that was unexpected or related to the
-   * exception.
+   * An optional CoAP response code, from a CoAP response, that was unexpected or related to the exception.
    */
   public ResponseCode code = null;
 
-  /** An optional CoAP diagnostic message, from a CoAP response, to clarify what went wrong. */
+  /**
+   * An optional CoAP diagnostic message, from a CoAP response, to clarify what went wrong.
+   */
   public String diagMsg = null;
 
   public PledgeException(String msg) {
@@ -47,18 +48,18 @@ public PledgeException(String msg) {
   }
 
   public PledgeException(String msg, CoapResponse resp) {
-    super(
-        msg
-            + ((resp.getCode() != null) ? (" (" + resp.getCode().toString() + ")") : "")
-            + ((resp.getCode() != null && resp.getPayload() != null)
-                ? (" - CoAP diagnostic: '" + new String(resp.getPayload()) + "'")
-                : ""));
+    super(msg + ((resp.getCode() != null) ? (" (" + resp.getCode().toString() + ")") : "")
+        + ((resp.getCode() != null && resp.getPayload() != null)
+        ? (" - CoAP diagnostic: '" + new String(resp.getPayload()) + "'") : ""));
     this.code = resp.getCode();
-    if (!ResponseCode.isSuccess(this.code) && resp.getPayload() != null)
+    if (!ResponseCode.isSuccess(this.code) && resp.getPayload() != null) {
       this.diagMsg = new String(resp.getPayload());
+    }
   }
 
-  public PledgeException(String msg, ResponseCode coapCode, String coapDiagnosticMsg) {}
+  public PledgeException(String msg, ResponseCode coapCode, String coapDiagnosticMsg) {
+    // FIXME
+  }
 
   private static final long serialVersionUID = -1980574489782019605L;
 }
diff --git a/src/main/java/com/google/openthread/pledge/PledgeMain.java b/src/main/java/com/google/openthread/pledge/PledgeMain.java
index 980a360..cec8f85 100644
--- a/src/main/java/com/google/openthread/pledge/PledgeMain.java
+++ b/src/main/java/com/google/openthread/pledge/PledgeMain.java
@@ -101,7 +101,8 @@ private static void runCli(Pledge pledge) {
 
           System.out.println("Done");
         } catch (Exception e) {
-          logger.error("error: {}", e.getMessage(), e);
+          logger.error("error: {}", e.getMessage());
+          logger.debug("details:", e);
         }
       }
     }