diff --git a/src/harness/fourslash.ts b/src/harness/fourslash.ts
index a95221e3b26..1addfba6396 100644
--- a/src/harness/fourslash.ts
+++ b/src/harness/fourslash.ts
@@ -641,16 +641,17 @@ namespace FourSlash {
             const defs = getDefs();
             let definitions: ts.DefinitionInfo[] | ReadonlyArray<ts.DefinitionInfo>;
             let testName: string;
-            if (this.isDefinitionInfoAndBoundSpan(defs)) {
+
+            if (!defs || Array.isArray(defs)) {
+                definitions = defs as ts.DefinitionInfo[] || [];
+                testName = "goToDefinitions";
+            }
+            else {
                 this.verifyDefinitionTextSpan(defs, startMarkerName);
 
                 definitions = defs.definitions;
                 testName = "goToDefinitionsAndBoundSpan";
             }
-            else {
-                definitions = defs || [];
-                testName = "goToDefinitions";
-            }
 
             if (endMarkers.length !== definitions.length) {
                 this.raiseError(`${testName} failed - expected to find ${endMarkers.length} definitions but got ${definitions.length}`);
@@ -682,10 +683,6 @@ namespace FourSlash {
             }
         }
 
-        private isDefinitionInfoAndBoundSpan(definition: ts.DefinitionInfo[] | ts.DefinitionInfoAndBoundSpan | undefined): definition is ts.DefinitionInfoAndBoundSpan {
-            return definition && (<ts.DefinitionInfoAndBoundSpan>definition).definitions !== undefined;
-        }
-
         public verifyGetEmitOutputForCurrentFile(expected: string): void {
             const emit = this.languageService.getEmitOutput(this.activeFile.fileName);
             if (emit.outputFiles.length !== 1) {