diff --git a/src/rules/noFloatingPromisesRule.ts b/src/rules/noFloatingPromisesRule.ts
index 1e09445675d..eb4cd2c5392 100644
--- a/src/rules/noFloatingPromisesRule.ts
+++ b/src/rules/noFloatingPromisesRule.ts
@@ -42,7 +42,7 @@ export class Rule extends Lint.Rules.TypedRule {
 class NoFloatingPromisesWalker extends Lint.ProgramAwareRuleWalker {
     private static allowedParentKinds = {
         [ts.SyntaxKind.CallExpression]: true,
-        [ts.SyntaxKind.VariableDeclaration]: true
+        [ts.SyntaxKind.VariableDeclaration]: true,
     };
 
     public visitCallExpression(node: ts.CallExpression): void {