diff --git a/src/vs/editor/browser/widget/codeEditorWidget.ts b/src/vs/editor/browser/widget/codeEditorWidget.ts
index 69794a4f647af909012dfc17e56bd837245c29c9..f690983fb77fc8320a0949ff46ce71037a3fa518 100644
--- a/src/vs/editor/browser/widget/codeEditorWidget.ts
+++ b/src/vs/editor/browser/widget/codeEditorWidget.ts
@@ -22,7 +22,7 @@ import { ICodeEditorService } from 'vs/editor/browser/services/codeEditorService
 import { ICommandDelegate } from 'vs/editor/browser/view/viewController';
 import { IContentWidgetData, IOverlayWidgetData, View } from 'vs/editor/browser/view/viewImpl';
 import { ViewOutgoingEvents } from 'vs/editor/browser/view/viewOutgoingEvents';
-import { ConfigurationChangedEvent, EditorLayoutInfo, IEditorOptions, EditorOption, IComputedEditorOptions, FindComputedEditorOptionValueById, IEditorConstructionOptions, shouldRenderValidationDecorations } from 'vs/editor/common/config/editorOptions';
+import { ConfigurationChangedEvent, EditorLayoutInfo, IEditorOptions, EditorOption, IComputedEditorOptions, FindComputedEditorOptionValueById, IEditorConstructionOptions, filterValidationDecorations } from 'vs/editor/common/config/editorOptions';
 import { Cursor, CursorStateChangedEvent } from 'vs/editor/common/controller/cursor';
 import { CursorColumns, ICursors } from 'vs/editor/common/controller/cursorCommon';
 import { ICursorPositionChangedEvent, ICursorSelectionChangedEvent } from 'vs/editor/common/controller/cursorEvents';
@@ -1064,7 +1064,7 @@ export class CodeEditorWidget extends Disposable implements editorBrowser.ICodeE
 		if (!this._modelData) {
 			return null;
 		}
-		return this._modelData.model.getLineDecorations(lineNumber, this._id, shouldRenderValidationDecorations(this._configuration.options));
+		return this._modelData.model.getLineDecorations(lineNumber, this._id, filterValidationDecorations(this._configuration.options));
 	}
 
 	public deltaDecorations(oldDecorations: string[], newDecorations: IModelDeltaDecoration[]): string[] {
diff --git a/src/vs/editor/common/config/editorOptions.ts b/src/vs/editor/common/config/editorOptions.ts
index bacc0dac28fadb79da890874aa7c7d5f619f9b76..9de657dcd87da8d758de994d22b77641c1940618 100644
--- a/src/vs/editor/common/config/editorOptions.ts
+++ b/src/vs/editor/common/config/editorOptions.ts
@@ -2344,12 +2344,12 @@ class EditorRenderLineNumbersOption extends BaseEditorOption<EditorOption.lineNu
 /**
  * @internal
  */
-export function shouldRenderValidationDecorations(options: IComputedEditorOptions): boolean {
+export function filterValidationDecorations(options: IComputedEditorOptions): boolean {
 	const renderValidationDecorations = options.get(EditorOption.renderValidationDecorations);
 	if (renderValidationDecorations === 'editable') {
-		return !options.get(EditorOption.readOnly);
+		return options.get(EditorOption.readOnly);
 	}
-	return renderValidationDecorations === 'on' ? true : false;
+	return renderValidationDecorations === 'on' ? false : true;
 }
 
 //#endregion
diff --git a/src/vs/editor/common/viewModel/viewModelDecorations.ts b/src/vs/editor/common/viewModel/viewModelDecorations.ts
index 5dc3ff2e85ef753b3946fd3c3f7ce69565375f18..c30da7ecdf431aed5ed644c9f7b786c7528e83b2 100644
--- a/src/vs/editor/common/viewModel/viewModelDecorations.ts
+++ b/src/vs/editor/common/viewModel/viewModelDecorations.ts
@@ -10,7 +10,7 @@ import * as editorCommon from 'vs/editor/common/editorCommon';
 import { IModelDecoration, ITextModel } from 'vs/editor/common/model';
 import { IViewModelLinesCollection } from 'vs/editor/common/viewModel/splitLinesCollection';
 import { ICoordinatesConverter, InlineDecoration, InlineDecorationType, ViewModelDecoration } from 'vs/editor/common/viewModel/viewModel';
-import { shouldRenderValidationDecorations } from 'vs/editor/common/config/editorOptions';
+import { filterValidationDecorations } from 'vs/editor/common/config/editorOptions';
 
 export interface IDecorationsViewportData {
 	/**
@@ -104,7 +104,7 @@ export class ViewModelDecorations implements IDisposable {
 	}
 
 	private _getDecorationsViewportData(viewportRange: Range): IDecorationsViewportData {
-		const modelDecorations = this._linesCollection.getDecorationsInRange(viewportRange, this.editorId, shouldRenderValidationDecorations(this.configuration.options));
+		const modelDecorations = this._linesCollection.getDecorationsInRange(viewportRange, this.editorId, filterValidationDecorations(this.configuration.options));
 		const startLineNumber = viewportRange.startLineNumber;
 		const endLineNumber = viewportRange.endLineNumber;
 
diff --git a/src/vs/editor/common/viewModel/viewModelImpl.ts b/src/vs/editor/common/viewModel/viewModelImpl.ts
index 9cfb2463bf11aeaf61a916a8fc3feccf1d3fccf7..aee611b762d3a6c71ed45e9a7cdf771365f48b45 100644
--- a/src/vs/editor/common/viewModel/viewModelImpl.ts
+++ b/src/vs/editor/common/viewModel/viewModelImpl.ts
@@ -6,7 +6,7 @@
 import { Color } from 'vs/base/common/color';
 import { IDisposable } from 'vs/base/common/lifecycle';
 import * as strings from 'vs/base/common/strings';
-import { ConfigurationChangedEvent, EDITOR_FONT_DEFAULTS, EditorOption, shouldRenderValidationDecorations } from 'vs/editor/common/config/editorOptions';
+import { ConfigurationChangedEvent, EDITOR_FONT_DEFAULTS, EditorOption, filterValidationDecorations } from 'vs/editor/common/config/editorOptions';
 import { IPosition, Position } from 'vs/editor/common/core/position';
 import { IRange, Range } from 'vs/editor/common/core/range';
 import { IConfiguration, IViewState } from 'vs/editor/common/editorCommon';
@@ -596,7 +596,7 @@ export class ViewModel extends viewEvents.ViewEventEmitter implements IViewModel
 	}
 
 	public getAllOverviewRulerDecorations(theme: ITheme): IOverviewRulerDecorations {
-		return this.lines.getAllOverviewRulerDecorations(this.editorId, shouldRenderValidationDecorations(this.configuration.options), theme);
+		return this.lines.getAllOverviewRulerDecorations(this.editorId, filterValidationDecorations(this.configuration.options), theme);
 	}
 
 	public invalidateOverviewRulerColorCache(): void {