diff --git a/glcpp/tests/065-if-defined-parens.c b/glcpp/tests/065-if-defined-parens.c
new file mode 100644
index 00000000000..48aa0f8c3ef
--- /dev/null
+++ b/glcpp/tests/065-if-defined-parens.c
@@ -0,0 +1,17 @@
+#if defined(foo)
+failure_1
+#else
+success_1
+#endif
+#define foo
+#if defined ( foo )
+success_2
+#else
+failure_2
+#endif
+#undef foo
+#if defined (foo)
+failure_3
+#else
+success_3
+#endif
diff --git a/glcpp/tests/065-if-defined-parens.c.expected b/glcpp/tests/065-if-defined-parens.c.expected
new file mode 100644
index 00000000000..3f01955ee40
--- /dev/null
+++ b/glcpp/tests/065-if-defined-parens.c.expected
@@ -0,0 +1,18 @@
+
+
+
+success_1
+
+
+
+success_2
+
+
+
+
+
+
+
+success_3
+
+