diff --git a/scripts/tslint/booleanTriviaRule.ts b/scripts/tslint/booleanTriviaRule.ts
index 756728a1a11..b626b7560a6 100644
--- a/scripts/tslint/booleanTriviaRule.ts
+++ b/scripts/tslint/booleanTriviaRule.ts
@@ -18,7 +18,7 @@ class BooleanTriviaWalker extends Lint.RuleWalker {
 
     visitCallExpression(node: ts.CallExpression) {
         super.visitCallExpression(node);
-        if (node.arguments) {
+        if (node.arguments && node.arguments.some(arg => arg.kind === ts.SyntaxKind.TrueKeyword || arg.kind === ts.SyntaxKind.FalseKeyword)) {
             const targetCallSignature = this.checker.getResolvedSignature(node);
             if (!!targetCallSignature) {
                 const targetParameters = targetCallSignature.getParameters();
diff --git a/src/services/utilities.ts b/src/services/utilities.ts
index 34ae39c02d4..f4617395c43 100644
--- a/src/services/utilities.ts
+++ b/src/services/utilities.ts
@@ -267,6 +267,9 @@ namespace ts {
             // find the child that contains 'position'
             for (let i = 0, n = current.getChildCount(sourceFile); i < n; i++) {
                 const child = current.getChildAt(i);
+                if (position < child.getFullStart() || position > child.getEnd()) {
+                    continue;
+                }
                 const start = allowPositionInLeadingTrivia ? child.getFullStart() : child.getStart(sourceFile);
                 if (start <= position) {
                     const end = child.getEnd();