diff --git a/README.md b/README.md
index 6681502..ce73810 100644
--- a/README.md
+++ b/README.md
@@ -158,7 +158,7 @@ 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 e57d9f1..7d490c4 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -57,7 +57,7 @@ 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