diff --git a/src/vs/editor/common/editorCommon.ts b/src/vs/editor/common/editorCommon.ts
index fb5cc8218ac..ce257401e3e 100644
--- a/src/vs/editor/common/editorCommon.ts
+++ b/src/vs/editor/common/editorCommon.ts
@@ -65,7 +65,7 @@ export interface IModelDecorationOverviewRulerOptions {
  */
 export interface IModelDecorationOptions {
 	/**
-	 * Customize the growing behaviour of the decoration when typing at the edges of the decoration.
+	 * Customize the growing behavior of the decoration when typing at the edges of the decoration.
 	 * Defaults to TrackedRangeStickiness.AlwaysGrowsWhenTypingAtEdges
 	 */
 	stickiness?: TrackedRangeStickiness;
@@ -925,8 +925,8 @@ export interface ITextModelWithMarkers extends ITextModel {
 }
 
 /**
- * Describes the behaviour of decorations when typing/editing near their edges.
- * Note: Please do not edit the values, as they very carefully match `DecorationRangeBehaviour`
+ * Describes the behavior of decorations when typing/editing near their edges.
+ * Note: Please do not edit the values, as they very carefully match `DecorationRangeBehavior`
  */
 export enum TrackedRangeStickiness {
 	AlwaysGrowsWhenTypingAtEdges = 0,
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index 2ae279bad8b..d293d474a24 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -1092,7 +1092,7 @@ declare module monaco.editor {
 	 */
 	export interface IModelDecorationOptions {
 		/**
-		 * Customize the growing behaviour of the decoration when typing at the edges of the decoration.
+		 * Customize the growing behavior of the decoration when typing at the edges of the decoration.
 		 * Defaults to TrackedRangeStickiness.AlwaysGrowsWhenTypingAtEdges
 		 */
 		stickiness?: TrackedRangeStickiness;
@@ -1638,8 +1638,8 @@ declare module monaco.editor {
 	}
 
 	/**
-	 * Describes the behaviour of decorations when typing/editing near their edges.
-	 * Note: Please do not edit the values, as they very carefully match `DecorationRangeBehaviour`
+	 * Describes the behavior of decorations when typing/editing near their edges.
+	 * Note: Please do not edit the values, as they very carefully match `DecorationRangeBehavior`
 	 */
 	export enum TrackedRangeStickiness {
 		AlwaysGrowsWhenTypingAtEdges = 0,