diff --git a/src/helper/xrig/mod.rs b/src/helper/xrig/mod.rs
index 9121034..d16ad9d 100644
--- a/src/helper/xrig/mod.rs
+++ b/src/helper/xrig/mod.rs
@@ -27,7 +27,10 @@ pub async fn update_xmrig_config(
     let mut config = request.send().await?.json::<Value>().await?;
     // modify node configuration
     let uri = [node.url(), ":".to_string(), node.port()].concat();
-    info!("replace xmrig config with node {}", uri);
+    info!(
+        "replace xmrig from api url {api_uri} config with node {}",
+        uri
+    );
     *config
         .pointer_mut("/pools/0/url")
         .ok_or_else(|| anyhow!("pools/0/url does not exist in xmrig config"))? = uri.into();
diff --git a/src/helper/xvb/algorithm.rs b/src/helper/xvb/algorithm.rs
index 3c8e37d..492e5f0 100644
--- a/src/helper/xvb/algorithm.rs
+++ b/src/helper/xvb/algorithm.rs
@@ -91,6 +91,7 @@ struct Stats {
     spareable_hashrate: f32,
     spared_time: u32,
     api_url: String,
+    msg_xmrig_or_xp: &str,
 }
 
 impl<'a> Algorithm<'a> {
@@ -140,6 +141,9 @@ impl<'a> Algorithm<'a> {
 
         let api_url = api_url_xmrig(xp_alive, true);
 
+        let msg_xmrig_or_xp = if xp_alive { "XMRig-Proxy" } else { "XMRig" };
+        info!("xp alive: {:?}", xp_alive);
+
         // TODO consider printing algorithm stats instead of spreadout print statements
         let stats = Stats {
             share,
@@ -158,6 +162,7 @@ impl<'a> Algorithm<'a> {
             spareable_hashrate,
             spared_time: u32::default(),
             api_url,
+            msg_xmrig_or_xp,
         };
 
         let mut new_instace = Self {
@@ -232,11 +237,6 @@ impl<'a> Algorithm<'a> {
     }
 
     async fn target_xvb_node(&self) {
-        let msg_xmrig_or_xp = if self.xp_alive {
-            "XMRig-Proxy"
-        } else {
-            "XMRig"
-        };
         let node = lock!(self.gui_api_xvb).stats_priv.node;
 
         debug!("Xvb Process | request {msg_xmrig_or_xp} to mine on XvB");
diff --git a/src/helper/xvb/mod.rs b/src/helper/xvb/mod.rs
index 688bc7f..e9f4b71 100644
--- a/src/helper/xvb/mod.rs
+++ b/src/helper/xvb/mod.rs
@@ -836,8 +836,10 @@ fn update_indicator_algo(
                 );
 
                 lock!(pub_api).stats_priv.time_switch_node = XVB_TIME_ALGO
-                    - last_algorithm.lock().unwrap().elapsed().as_secs() as u32
-                    - time_donated;
+                    .checked_sub(last_algorithm.lock().unwrap().elapsed().as_secs() as u32)
+                    .unwrap_or_default()
+                    .checked_sub(time_donated)
+                    .unwrap_or_default();
                 "time until switch to mining on XvB".to_string()
             }
             _ => {