diff --git a/tests/cases/fourslash/addMethodToInterface1.ts b/tests/cases/fourslash/addMethodToInterface1.ts
index b9835cfa44a..749f5601173 100644
--- a/tests/cases/fourslash/addMethodToInterface1.ts
+++ b/tests/cases/fourslash/addMethodToInterface1.ts
@@ -9,7 +9,7 @@
 
 edit.disableFormatting();
 
-goTo.marker(1);
+goTo.marker('1');
 
 edit.insert("    compareTo(): number;\n");
 diagnostics.validateTypesAtPositions(168,84,53,118,22);
diff --git a/tests/cases/fourslash/arrayConcatTypeCheck0.ts b/tests/cases/fourslash/arrayConcatTypeCheck0.ts
index 0e21eb44b3b..ac5404266a6 100644
--- a/tests/cases/fourslash/arrayConcatTypeCheck0.ts
+++ b/tests/cases/fourslash/arrayConcatTypeCheck0.ts
@@ -11,7 +11,7 @@
 
 edit.disableFormatting();
 
-goTo.marker(1);
+goTo.marker('1');
 
 edit.insert(", 'world'");
 diagnostics.validateTypesAtPositions(78);
diff --git a/tests/cases/fourslash/arrayConcatTypeCheck1.ts b/tests/cases/fourslash/arrayConcatTypeCheck1.ts
index 7f2af5973b6..42d9cdb8a1c 100644
--- a/tests/cases/fourslash/arrayConcatTypeCheck1.ts
+++ b/tests/cases/fourslash/arrayConcatTypeCheck1.ts
@@ -10,18 +10,18 @@
 
 edit.disableFormatting();
 
-goTo.marker(1);
+goTo.marker('1');
 
 edit.deleteAtCaret(9);
 
-goTo.marker(3);
+goTo.marker('3');
 
 edit.deleteAtCaret(7);
 
-goTo.marker(2);
+goTo.marker('2');
 
 edit.deleteAtCaret(7);
 
-goTo.marker(4);
+goTo.marker('4');
 diagnostics.validateTypesAtPositions(43);
 
diff --git a/tests/cases/fourslash/genericParameterHelp.ts b/tests/cases/fourslash/genericParameterHelp.ts
index b5601c1eb5b..e5a6385c179 100644
--- a/tests/cases/fourslash/genericParameterHelp.ts
+++ b/tests/cases/fourslash/genericParameterHelp.ts
@@ -27,7 +27,7 @@
 ////class Bar<T> extends testClass</*type3*/
 ////var x : testClass<,, /*type4*/any>;
 
-// goTo.marker("1");
+goTo.marker("1");
 // verify.currentSignatureParamterCountIs(3);
 // verify.currentSignatureHelpIs("testFunction<T extends IFoo, U, M extends IFoo>(a: T, b: U, c: M): M");
 
diff --git a/tests/cases/fourslash/importDeclPaste0.ts b/tests/cases/fourslash/importDeclPaste0.ts
index 60a82aa124f..6bb8eb6894e 100644
--- a/tests/cases/fourslash/importDeclPaste0.ts
+++ b/tests/cases/fourslash/importDeclPaste0.ts
@@ -13,6 +13,6 @@
 
 edit.disableFormatting();
 
-goTo.marker(1);
+goTo.marker('1');
 
 //edit.insert("\nimport I1 = module(\"exportEqualsInterface_A\");\n");
diff --git a/tests/cases/fourslash/multipleExportAssignmentsErrorList0.ts b/tests/cases/fourslash/multipleExportAssignmentsErrorList0.ts
index 51d1d3ccf36..721d110ce68 100644
--- a/tests/cases/fourslash/multipleExportAssignmentsErrorList0.ts
+++ b/tests/cases/fourslash/multipleExportAssignmentsErrorList0.ts
@@ -18,10 +18,10 @@
 //// 
 
 edit.disableFormatting();
-goTo.marker(1);
+goTo.marker('1');
 
 edit.deleteAtCaret(24);
 
-goTo.marker(1);
+goTo.marker('1');
 
 edit.insert("export = connectExport;\n");