diff --git a/src/jsep-eval.js b/src/jsep-eval.js
index eb48f66..44bda5c 100644
--- a/src/jsep-eval.js
+++ b/src/jsep-eval.js
@@ -136,8 +136,12 @@ const evaluateExpressionNode = (node, context) => {
     case types.CALL : {
       assert(_.includes([types.MEMBER, types.IDENTIFIER, types.THIS], node.callee.type), 'Invalid function callee type');
       const callee = evaluateExpressionNode(node.callee, context);
+      let object = null;
+      if (node.callee.type === types.MEMBER) {
+        object = evaluateExpressionNode(node.callee.object, context);
+      }
       const args = _.map(node.arguments, arg => evaluateExpressionNode(arg, context));
-      return callee.apply(null, args);
+      return callee.apply(object, args);
     }
     case types.IDENTIFIER: // !!! fall-through to MEMBER !!! //
     case types.MEMBER: {
diff --git a/test/jsep-eval.test.js b/test/jsep-eval.test.js
index e1e1a72..b3eacc7 100644
--- a/test/jsep-eval.test.js
+++ b/test/jsep-eval.test.js
@@ -37,6 +37,16 @@ describe('======== ' + name + ' =========', () => {
       const ctx = {a: () => 2};
       expect(evaluate(exp, ctx)).to.equal(2);
     });
+    it(name + ': evaluate a call expression on an array from context with this', () => {
+      const exp = 'this.a.indexOf(2)';
+      const ctx = {a: [1, 2, 3]};
+      expect(evaluate(exp, ctx)).to.equal(1);
+    });
+    it(name + ': evaluate a call expression on an array from context without this', () => {
+      const exp = 'a.indexOf(2)';
+      const ctx = {a: [1, 2, 3]};
+      expect(evaluate(exp, ctx)).to.equal(1);
+    });
     it(name + ': evaluate a call expression with an arg', () => {
       const exp = 'a(b)';
       const ctx = {a: arg => 2 * arg, b: 3};