diff --git a/CHANGELOG.md b/CHANGELOG.md
index d315884..d8d96c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -82,6 +82,7 @@ For major (breaking) changes - **version 4, 3 and 2** - see end of page.
 
 | Version | Date       | Comment                                                                                             |
 | ------- | ---------- | --------------------------------------------------------------------------------------------------- |
+| 5.18.2  | 2023-06-08 | `fsSize()` improved error handling (linux alpine)                                                   |
 | 5.18.1  | 2023-06-07 | `networkInterfaces()` cleaned up testVirtualNic                                                     |
 | 5.18.0  | 2023-06-06 | `fsSize()` added optional drive parameter                                                           |
 | 5.17.17 | 2023-06-03 | `osInfo()` improved fqdn (linux)                                                                    |
diff --git a/docs/history.html b/docs/history.html
index 90221cb..992e829 100644
--- a/docs/history.html
+++ b/docs/history.html
@@ -57,6 +57,11 @@
                     </tr>
                   </thead>
                   <tbody>
+                    <tr>
+                      <th scope="row">5.18.2</th>
+                      <td>2023-06-07</td>
+                      <td><span class="code">fsSize()</span> improved error handling (alpine linux)</td>
+                    </tr>
                     <tr>
                       <th scope="row">5.18.1</th>
                       <td>2023-06-07</td>
diff --git a/docs/index.html b/docs/index.html
index 8223b56..ab7c7c9 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -170,7 +170,7 @@
       <img class="logo" src="assets/logo.png" alt="logo">
       <div class="title">systeminformation</div>
       <div class="subtitle"><span id="typed"></span>&nbsp;</div>
-      <div class="version">New Version: <span id="version">5.18.1</span></div>
+      <div class="version">New Version: <span id="version">5.18.2</span></div>
       <button class="btn btn-light" onclick="location.href='https://github.com/sebhildebrandt/systeminformation'">View on Github <i class=" fab fa-github"></i></button>
     </div>
     <div class="down">
diff --git a/lib/filesystem.js b/lib/filesystem.js
index b84baf9..7aaaf1d 100644
--- a/lib/filesystem.js
+++ b/lib/filesystem.js
@@ -158,7 +158,7 @@ function fsSize(drive, callback) {
               return item.fs.toLowerCase().indexOf(drive.toLowerCase()) >= 0 || item.mount.toLowerCase().indexOf(drive.toLowerCase()) >= 0;
             });
           }
-          if ((!error || data.length) && stdout.toString().toLowerCase().indexOf('unrecognized option') === -1) {
+          if ((!error || data.length) && stdout.toString().trim() !== '') {
             if (callback) {
               callback(data);
             }