diff --git a/packages/mermaid/src/diagrams/architecture/architectureDb.ts b/packages/mermaid/src/diagrams/architecture/architectureDb.ts
index 5d90bd8a6..4764671e8 100644
--- a/packages/mermaid/src/diagrams/architecture/architectureDb.ts
+++ b/packages/mermaid/src/diagrams/architecture/architectureDb.ts
@@ -41,7 +41,6 @@ export class ArchitectureDB implements DiagramDB {
   private groups: Record<string, ArchitectureGroup> = {};
   private edges: ArchitectureEdge[] = [];
   private registeredIds: Record<string, 'node' | 'group'> = {};
-  // private config: Required<ArchitectureDiagramConfig> = DEFAULT_ARCHITECTURE_CONFIG;
   private dataStructures?: ArchitectureState['dataStructures'];
   private elements: Record<string, D3Element> = {};
 
@@ -184,7 +183,7 @@ export class ArchitectureDB implements DiagramDB {
         `The left-hand id [${lhsId}] does not yet exist. Please create the service/group before declaring an edge to it.`
       );
     }
-    if (this.nodes[rhsId] === undefined && this.groups[lhsId] === undefined) {
+    if (this.nodes[rhsId] === undefined && this.groups[rhsId] === undefined) {
       throw new Error(
         `The right-hand id [${rhsId}] does not yet exist. Please create the service/group before declaring an edge to it.`
       );
@@ -359,7 +358,7 @@ export class ArchitectureDB implements DiagramDB {
  * @param field - the config field to access
  * @returns
  */
-// export function getConfigField<T extends key of ArchitectureDiagramConfig>(
+// export function getConfigField<T extends keyof ArchitectureDiagramConfig>(
 //   field: T
 // ): Required<ArchitectureDiagramConfig>[T] {
 //   return db.getConfig()[field];
diff --git a/packages/mermaid/src/diagrams/architecture/architectureParser.ts b/packages/mermaid/src/diagrams/architecture/architectureParser.ts
index f3d7771be..58820dad4 100644
--- a/packages/mermaid/src/diagrams/architecture/architectureParser.ts
+++ b/packages/mermaid/src/diagrams/architecture/architectureParser.ts
@@ -10,7 +10,7 @@ const populateDb = (ast: Architecture, db: ArchitectureDB) => {
   ast.groups.map((group) => db.addGroup(group));
   ast.services.map((service) => db.addService({ ...service, type: 'service' }));
   ast.junctions.map((service) => db.addJunction({ ...service, type: 'junction' }));
-  // @ts-ignore ToDo our parser guarantees the type is L/R/T/B and not string. How to change to union type?
+  // @ts-ignore TODO our parser guarantees the type is L/R/T/B and not string. How to change to union type?
   ast.edges.map((edge) => db.addEdge(edge));
 };
 
diff --git a/packages/mermaid/src/diagrams/architecture/architectureRenderer.ts b/packages/mermaid/src/diagrams/architecture/architectureRenderer.ts
index ad435a29f..b29567236 100644
--- a/packages/mermaid/src/diagrams/architecture/architectureRenderer.ts
+++ b/packages/mermaid/src/diagrams/architecture/architectureRenderer.ts
@@ -191,7 +191,7 @@ function getAlignments(
               prev[dir] ??= [];
               prev[dir] = [...prev[dir], ...aNodeIds, ...bNodeIds]; // add the node ids of both groups to the axis array in prev
             } else if (aGroupId === 'default' || bGroupId === 'default') {
-              // If either of the groups are in the default space (not in a group), use the same behaviour as above
+              // If either of the groups are in the default space (not in a group), use the same behavior as above
               prev[dir] ??= [];
               prev[dir] = [...prev[dir], ...aNodeIds, ...bNodeIds];
             } else {