diff --git a/src/LanguageServer.jl b/src/LanguageServer.jl
index a7a4361bf..f9a35a30a 100644
--- a/src/LanguageServer.jl
+++ b/src/LanguageServer.jl
@@ -41,6 +41,7 @@ const SERVER_CANCELLED       = -32802
 const REQUEST_FAILED         = -32803
 
 # Specific to our implementation
+const FORMATTING_FAILED  = -33000
 const NO_DOCUMENT        = -33100
 const MISMATCHED_VERSION = -33101
 const SHUTDOWN_REQUEST   = -32600
@@ -50,6 +51,7 @@ const ERROR_CODES = (
     CONTENT_MODIFIED,
     SERVER_CANCELLED,
     REQUEST_FAILED,
+    FORMATTING_FAILED,
     NO_DOCUMENT,
     MISMATCHED_VERSION,
     SHUTDOWN_REQUEST
diff --git a/src/requests/features.jl b/src/requests/features.jl
index 9d232b64d..0652ec578 100644
--- a/src/requests/features.jl
+++ b/src/requests/features.jl
@@ -160,7 +160,7 @@ function textDocument_formatting_request(params::DocumentFormattingParams, serve
         format_text(get_text(doc), params, config)
     catch err
         return JSONRPC.JSONRPCError(
-            -32000,
+            FORMATTING_FAILED,
             "Failed to format document: $err.",
             nothing
         )
@@ -210,7 +210,7 @@ function textDocument_range_formatting_request(params::DocumentRangeFormattingPa
         format_text(text_marked, params, config)
     catch err
         return JSONRPC.JSONRPCError(
-            -33000,
+            FORMATTING_FAILED,
             "Failed to format document: $err.",
             nothing
         )