diff --git a/ecmascript-testcases/test-bug-json-parse-posexpt.js b/ecmascript-testcases/test-bug-json-parse-posexpt.js
new file mode 100644
index 00000000..dc5b737d
--- /dev/null
+++ b/ecmascript-testcases/test-bug-json-parse-posexpt.js
@@ -0,0 +1,30 @@
+/*
+ *  JSON number parsing bug in Duktape 1.0 for explicitly positive exponents,
+ *  eval() works.
+ */
+
+/*===
+150
+150
+===*/
+
+function testJson() {
+    // The parse error here is caused by the exponent plus sign.
+    print(JSON.parse('1.50e+2'));
+}
+
+function testEval() {
+    print(eval('1.50e+2'));
+}
+
+try {
+    testJson();
+} catch (e) {
+    print(e.stack || e);
+}
+
+try {
+    testEval();
+} catch (e) {
+    print(e.stack || e);
+}