diff --git a/src/services/completions.ts b/src/services/completions.ts
index 3e5d3a8c2a7..6dd3e51640a 100644
--- a/src/services/completions.ts
+++ b/src/services/completions.ts
@@ -1659,8 +1659,9 @@ namespace ts.Completions {
 
         function isContextTokenValueLocation(contextToken: Node) {
             return contextToken &&
-                contextToken.kind === SyntaxKind.TypeOfKeyword &&
-                (contextToken.parent.kind === SyntaxKind.TypeQuery || isTypeOfExpression(contextToken.parent));
+                ((contextToken.kind === SyntaxKind.TypeOfKeyword &&
+                    (contextToken.parent.kind === SyntaxKind.TypeQuery || isTypeOfExpression(contextToken.parent))) ||
+                (contextToken.kind === SyntaxKind.AssertsKeyword && contextToken.parent.kind === SyntaxKind.TypePredicate));
         }
 
         function isContextTokenTypeLocation(contextToken: Node): boolean {
diff --git a/tests/cases/fourslash/completionsAsserts.ts b/tests/cases/fourslash/completionsAsserts.ts
new file mode 100644
index 00000000000..cd1d50d953a
--- /dev/null
+++ b/tests/cases/fourslash/completionsAsserts.ts
@@ -0,0 +1,8 @@
+/// <reference path="fourslash.ts" />
+
+////declare function assert(argument1: any): asserts a/**/
+
+verify.completions({
+    marker: "",
+    includes: { name: "argument1" }
+});