diff --git a/bin/oli/README.md b/bin/oli/README.md
index ed1a409fb0e3..d1ea13d1fa06 100644
--- a/bin/oli/README.md
+++ b/bin/oli/README.md
@@ -72,8 +72,8 @@ For different services, you could find the configuration keys in the correspondi
 ### Example: use `oli` to upload file to AWS S3
 
 ```text
-$ oli cp ./update-ecs-loadbalancer.json s3://update-ecs-loadbalancer.json
-$ oli ls s3://                                                           
+$ oli cp ./update-ecs-loadbalancer.json s3:/update-ecs-loadbalancer.json
+$ oli ls s3:/
 fleet.png
 update-ecs-loadbalancer.json
 ```
@@ -81,8 +81,8 @@ update-ecs-loadbalancer.json
 ### Example: use `oli` copy file from S3 to R2
 
 ```text
-$ oli cp s3://fleet.png r2://fleet.png
-$ oli ls r2://
+$ oli cp s3:/fleet.png r2:/fleet.png
+$ oli ls r2:/
 fleet.png
 ```
 
diff --git a/bin/oli/src/commands/cat.rs b/bin/oli/src/commands/cat.rs
index fa892be6680e..567ebf9f1cba 100644
--- a/bin/oli/src/commands/cat.rs
+++ b/bin/oli/src/commands/cat.rs
@@ -30,6 +30,7 @@ use crate::params::config::ConfigParams;
 pub struct CatCmd {
     #[command(flatten)]
     pub config_params: ConfigParams,
+    /// In the form of `<profile>:/<path>`.
     #[arg()]
     pub target: String,
 }
diff --git a/bin/oli/src/commands/cp.rs b/bin/oli/src/commands/cp.rs
index ecadddfa010f..09d7e2d73f03 100644
--- a/bin/oli/src/commands/cp.rs
+++ b/bin/oli/src/commands/cp.rs
@@ -47,8 +47,10 @@ const PROGRESS_CHARS: &str = "#>-";
 pub struct CopyCmd {
     #[command(flatten)]
     pub config_params: ConfigParams,
+    /// In the form of `<profile>:/<path>`.
     #[arg()]
     pub source: String,
+    /// In the form of `<profile>:/<path>`.
     #[arg()]
     pub destination: String,
     /// Copy objects recursively.
diff --git a/bin/oli/src/commands/ls.rs b/bin/oli/src/commands/ls.rs
index 3e7eb1026889..10050982936d 100644
--- a/bin/oli/src/commands/ls.rs
+++ b/bin/oli/src/commands/ls.rs
@@ -26,6 +26,7 @@ use crate::params::config::ConfigParams;
 pub struct LsCmd {
     #[command(flatten)]
     pub config_params: ConfigParams,
+    /// In the form of `<profile>:/<path>`.
     #[arg()]
     pub target: String,
     /// List objects recursively.
diff --git a/bin/oli/src/commands/rm.rs b/bin/oli/src/commands/rm.rs
index 04bc258d48c9..5c38bf1a001e 100644
--- a/bin/oli/src/commands/rm.rs
+++ b/bin/oli/src/commands/rm.rs
@@ -25,6 +25,7 @@ use crate::params::config::ConfigParams;
 pub struct RmCmd {
     #[command(flatten)]
     pub config_params: ConfigParams,
+    /// In the form of `<profile>:/<path>`.
     #[arg()]
     pub target: String,
     /// Remove objects recursively.
diff --git a/bin/oli/src/commands/stat.rs b/bin/oli/src/commands/stat.rs
index 8f1051f1a1c7..04cc2431bfca 100644
--- a/bin/oli/src/commands/stat.rs
+++ b/bin/oli/src/commands/stat.rs
@@ -29,6 +29,7 @@ use crate::params::config::ConfigParams;
 pub struct StatCmd {
     #[command(flatten)]
     pub config_params: ConfigParams,
+    /// In the form of `<profile>:/<path>`.
     #[arg()]
     pub target: String,
 }
diff --git a/bin/oli/src/config/mod.rs b/bin/oli/src/config/mod.rs
index d15ea884a498..ec401f367488 100644
--- a/bin/oli/src/config/mod.rs
+++ b/bin/oli/src/config/mod.rs
@@ -147,7 +147,7 @@ impl Config {
 
         let location = Url::parse(s)?;
         if location.has_host() {
-            Err(anyhow!("Host part in a location is not supported."))?;
+            Err(anyhow!("Host part in a location is not supported. Hint: are you typing `://` instead of `:/`?"))?;
         }
 
         let profile_name = location.scheme();
@@ -338,7 +338,7 @@ enable_virtual_host_style = "on"
         let uri = "mys3://foo/1.txt";
         let expected_msg = "Host part in a location is not supported.";
         match cfg.parse_location(uri) {
-            Err(e) if e.to_string() == expected_msg => Ok(()),
+            Err(e) if e.to_string().contains(expected_msg) => Ok(()),
             _ => Err(anyhow!(
                 "Getting an message \"{}\" is expected when parsing {}.",
                 expected_msg,