diff --git a/src/harness/fourslash.ts b/src/harness/fourslash.ts
index a0d9499f48b..88fb3639d1e 100644
--- a/src/harness/fourslash.ts
+++ b/src/harness/fourslash.ts
@@ -749,29 +749,6 @@ module FourSlash {
             }
         }
 
-        public verifyImplementorsCountIs(count: number, localFilesOnly: boolean = true) {
-            var implementors = this.getImplementorsAtCaret();
-            var implementorsCount = 0;
-
-            if (localFilesOnly) {
-                var localFiles = this.testData.files.map<string>(file => file.fileName);
-                // Count only the references in local files. Filter the ones in lib and other files.
-                implementors.forEach((entry) => {
-                    if (localFiles.some((filename) => filename === entry.fileName)) {
-                        ++implementorsCount;
-                    }
-                });
-            }
-            else {
-                implementorsCount = implementors.length;
-            }
-
-            if (implementorsCount !== count) {
-                var condition = localFilesOnly ? "excluding libs" : "including libs";
-                this.raiseError("Expected implementors count (" + condition + ") to be " + count + ", but is actually " + implementors.length);
-            }
-        }
-
         private getMemberListAtCaret() {
             return this.languageService.getCompletionsAtPosition(this.activeFile.fileName, this.currentCaretPosition, true);
         }
@@ -788,10 +765,6 @@ module FourSlash {
             return this.languageService.getReferencesAtPosition(this.activeFile.fileName, this.currentCaretPosition);
         }
 
-        private getImplementorsAtCaret() {
-            return this.languageService.getImplementorsAtPosition(this.activeFile.fileName, this.currentCaretPosition);
-        }
-
         private assertionMessage(name: string, actualValue: any, expectedValue: any) {
             return "\nActual " + name + ":\n\t" + actualValue + "\nExpected value:\n\t" + expectedValue;
         }
diff --git a/src/services/services.ts b/src/services/services.ts
index 14533a95a49..0b6945ef848 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -892,7 +892,6 @@ module ts {
         getDefinitionAtPosition(fileName: string, position: number): DefinitionInfo[];
         getReferencesAtPosition(fileName: string, position: number): ReferenceEntry[];
         getOccurrencesAtPosition(fileName: string, position: number): ReferenceEntry[];
-        getImplementorsAtPosition(fileName: string, position: number): ReferenceEntry[];
 
         getNavigateToItems(searchValue: string): NavigateToItem[];
         getNavigationBarItems(fileName: string): NavigationBarItem[];
@@ -5444,7 +5443,6 @@ module ts {
             getDefinitionAtPosition,
             getReferencesAtPosition,
             getOccurrencesAtPosition,
-            getImplementorsAtPosition: (filename, position) => [],
             getNameOrDottedNameSpan,
             getBreakpointStatementAtPosition,
             getNavigateToItems,
diff --git a/src/services/shims.ts b/src/services/shims.ts
index 38c68c067f8..a355ddafab2 100644
--- a/src/services/shims.ts
+++ b/src/services/shims.ts
@@ -133,12 +133,6 @@ module ts {
          */
         getOccurrencesAtPosition(fileName: string, position: number): string;
 
-        /**
-         * Returns a JSON-encoded value of the type:
-         * { fileName: string; textSpan: { start: number; length: number}; isWriteAccess: boolean }[]
-         */
-        getImplementorsAtPosition(fileName: string, position: number): string;
-        
         /**
          * Returns a JSON-encoded value of the type:
          * { name: string; kind: string; kindModifiers: string; containerName: string; containerKind: string; matchKind: string; fileName: string; textSpan: { start: number; length: number}; } [] = [];
@@ -696,16 +690,6 @@ module ts {
                 });
         }
 
-        /// GET IMPLEMENTORS
-        public getImplementorsAtPosition(fileName: string, position: number): string {
-            return this.forwardJSONCall(
-                "getImplementorsAtPosition('" + fileName + "', " + position + ")",
-                () => {
-                    return this.languageService.getImplementorsAtPosition(fileName, position);
-                });
-        }
-
-
         /// COMPLETION LISTS
 
         /**
diff --git a/tests/cases/fourslash/getImplementors1.ts b/tests/cases/fourslash/getImplementors1.ts
deleted file mode 100644
index c67e246002c..00000000000
--- a/tests/cases/fourslash/getImplementors1.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-///<reference path="fourslash.ts" />
-
-////class C {
-////    /**/p;
-////}
-
-goTo.marker();
-verify.implementorsCountIs(0);
\ No newline at end of file
diff --git a/tests/cases/fourslash/getImplementorsForFunction.ts b/tests/cases/fourslash/getImplementorsForFunction.ts
deleted file mode 100644
index d2df60dc14d..00000000000
--- a/tests/cases/fourslash/getImplementorsForFunction.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-///<reference path="fourslash.ts" />
-////function fo/**/o() {
-////}
-
-goTo.marker();
-verify.implementorsCountIs(0);