diff --git a/README.md b/README.md
index 3c20c8e..9be3f26 100644
--- a/README.md
+++ b/README.md
@@ -163,7 +163,7 @@ export interface AnnotationProperties {
   startColumn?: number
 
   /**
-   * The start column for the annotation. Cannot be sent when `startLine` and `endLine` are different values.
+   * The end column for the annotation. Cannot be sent when `startLine` and `endLine` are different values.
    * Defaults to `startColumn` when `startColumn` is provided.
    */
   endColumn?: number
diff --git a/src/core.ts b/src/core.ts
index bd98e4b..30ff844 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -64,7 +64,7 @@ export interface AnnotationProperties {
   startColumn?: number
 
   /**
-   * The start column for the annotation. Cannot be sent when `startLine` and `endLine` are different values.
+   * The end column for the annotation. Cannot be sent when `startLine` and `endLine` are different values.
    * Defaults to `startColumn` when `startColumn` is provided.
    */
   endColumn?: number