diff --git a/src/tools/rust-analyzer/docs/user/generated_config.adoc b/src/tools/rust-analyzer/docs/user/generated_config.adoc
index 5b86766aa8ea..c6f5852f87ff 100644
--- a/src/tools/rust-analyzer/docs/user/generated_config.adoc
+++ b/src/tools/rust-analyzer/docs/user/generated_config.adoc
@@ -94,10 +94,10 @@ avoid checking unnecessary things.
 --
 Default:
 ----
-{
-  "miri": null,
-  "debug_assertions": null
-}
+[
+  "debug_assertion",
+  "miri"
+]
 ----
 List of cfg options to enable with the given values.
 
diff --git a/src/tools/rust-analyzer/editors/code/package.json b/src/tools/rust-analyzer/editors/code/package.json
index 80246bf3feac..6cb74a94a00c 100644
--- a/src/tools/rust-analyzer/editors/code/package.json
+++ b/src/tools/rust-analyzer/editors/code/package.json
@@ -791,11 +791,14 @@
                 "properties": {
                     "rust-analyzer.cargo.cfgs": {
                         "markdownDescription": "List of cfg options to enable with the given values.",
-                        "default": {
-                            "miri": null,
-                            "debug_assertions": null
-                        },
-                        "type": "object"
+                        "default": [
+                            "debug_assertion",
+                            "miri"
+                        ],
+                        "type": "array",
+                        "items": {
+                            "type": "string"
+                        }
                     }
                 }
             },