diff --git a/mutiny-core/src/lsp/voltage.rs b/mutiny-core/src/lsp/voltage.rs
index 5d9ce7143..a5b3b3cab 100644
--- a/mutiny-core/src/lsp/voltage.rs
+++ b/mutiny-core/src/lsp/voltage.rs
@@ -152,7 +152,7 @@ impl LspClient {
         url: &str,
         logger: &MutinyLogger,
     ) -> Result<(PublicKey, String), MutinyError> {
-        let builder = http_client.get(format!("{}{}", url, GET_INFO_PATH));
+        let builder = http_client.get(format!("{}{}", url.trim(), GET_INFO_PATH));
         let request = add_x_auth_token_if_needed(url, builder)?;
 
         let response: reqwest::Response = utils::fetch_with_timeout(http_client, request)
@@ -296,7 +296,7 @@ impl Lsp for LspClient {
 
         let builder = self
             .http_client
-            .post(format!("{}{}", &self.url, PROPOSAL_PATH))
+            .post(format!("{}{}", &self.url.trim(), PROPOSAL_PATH))
             .json(&payload);
 
         let request = add_x_auth_token_if_needed(&self.url, builder)?;
@@ -353,7 +353,7 @@ impl Lsp for LspClient {
     async fn get_lsp_fee_msat(&self, fee_request: FeeRequest) -> Result<FeeResponse, MutinyError> {
         let builder = self
             .http_client
-            .post(format!("{}{}", &self.url, FEE_PATH))
+            .post(format!("{}{}", &self.url.trim(), FEE_PATH))
             .json(&fee_request);
 
         let request = add_x_auth_token_if_needed(&self.url, builder)?;
diff --git a/mutiny-core/src/nodemanager.rs b/mutiny-core/src/nodemanager.rs
index f7eb9b0c1..b66d5c434 100644
--- a/mutiny-core/src/nodemanager.rs
+++ b/mutiny-core/src/nodemanager.rs
@@ -59,6 +59,7 @@ use std::sync::atomic::{AtomicBool, Ordering};
 #[cfg(not(target_arch = "wasm32"))]
 use std::time::Instant;
 use std::{collections::HashMap, ops::Deref, sync::Arc};
+use url::Url;
 #[cfg(target_arch = "wasm32")]
 use web_time::Instant;
 
@@ -2036,8 +2037,14 @@ pub fn create_lsp_config(
 ) -> Result<Option<LspConfig>, MutinyError> {
     match (lsp_url.clone(), lsp_connection_string.clone()) {
         (Some(lsp_url), None) => {
-            if !lsp_url.is_empty() {
-                Ok(Some(LspConfig::new_voltage_flow(lsp_url)))
+            let trimmed = lsp_url.trim().to_string();
+            if !trimmed.is_empty() {
+                // make sure url is valid
+                if Url::parse(&trimmed).is_err() {
+                    return Err(MutinyError::InvalidArgumentsError);
+                }
+
+                Ok(Some(LspConfig::new_voltage_flow(trimmed)))
             } else {
                 Ok(None)
             }