diff --git a/src/Core/Interop/Linux/SecretServiceCollection.cs b/src/Core/Interop/Linux/SecretServiceCollection.cs
index 20afc2341..d8cb12889 100644
--- a/src/Core/Interop/Linux/SecretServiceCollection.cs
+++ b/src/Core/Interop/Linux/SecretServiceCollection.cs
@@ -16,7 +16,7 @@ public class SecretServiceCollection : ICredentialStore
         private const string SchemaName = "com.microsoft.GitCredentialManager";
         private const string ServiceAttributeName = "service";
         private const string AccountAttributeName = "account";
-        private const string PlainTextContentType = "plain/text";
+        private const string PlainTextContentType = "text/plain";
 
         private readonly string _namespace;