diff --git a/test/Index/comment-custom-block-command.cpp b/test/Index/comment-custom-block-command.cpp
new file mode 100644
index 0000000..80a58ca
--- /dev/null
+++ b/test/Index/comment-custom-block-command.cpp
@@ -0,0 +1,38 @@
+// RUN: rm -rf %t
+// RUN: mkdir %t
+
+// Check that custom block commands are defined correctly.
+// RUN: %clang_cc1 -fcomment-block-commands=CustomCommand -x c++ -std=c++11 -emit-pch -o %t/out.pch %s
+// RUN: %clang_cc1 -x c++ -std=c++11 -fcomment-block-commands=CustomCommand -include-pch %t/out.pch -fsyntax-only %s
+
+// RUN: c-index-test -test-load-source all -comments-xml-schema=%S/../../bindings/xml/comment-xml-schema.rng %s -std=c++11 -fcomment-block-commands=CustomCommand > %t/out.c-index-direct
+// RUN: c-index-test -test-load-tu %t/out.pch all > %t/out.c-index-pch
+
+// RUN: FileCheck %s -check-prefix=WRONG < %t/out.c-index-direct
+// RUN: FileCheck %s -check-prefix=WRONG < %t/out.c-index-pch
+
+// Ensure that XML is not invalid
+// WRONG-NOT: CommentXMLInvalid
+
+// RUN: FileCheck %s < %t/out.c-index-direct
+// RUN: FileCheck %s < %t/out.c-index-pch
+
+// XFAIL: valgrind
+
+#ifndef HEADER
+#define HEADER
+
+/// \CustomCommand Aaa.
+void comment_custom_block_command_1();
+
+// CHECK: comment-custom-block-command.cpp:[[@LINE-2]]:6: FunctionDecl=comment_custom_block_command_1:{{.*}} FullCommentAsHTML=[<p> Aaa.</p>] FullCommentAsXML=[<Function file="{{[^"]+}}comment-custom-block-command.cpp" line="[[@LINE-2]]" column="6"><Name>comment_custom_block_command_1</Name><USR>c:@F@comment_custom_block_command_1#</USR><Declaration>void comment_custom_block_command_1()</Declaration><Discussion><Para> Aaa.</Para></Discussion></Function>]
+// CHECK-NEXT:  CommentAST=[
+// CHECK-NEXT:    (CXComment_FullComment
+// CHECK-NEXT:       (CXComment_Paragraph IsWhitespace
+// CHECK-NEXT:         (CXComment_Text Text=[ ] IsWhitespace))
+// CHECK-NEXT:       (CXComment_BlockCommand CommandName=[CustomCommand]
+// CHECK-NEXT:         (CXComment_Paragraph
+// CHECK-NEXT:           (CXComment_Text Text=[ Aaa.]))))]
+
+#endif
+