diff --git a/clang/test/Preprocessor/include-leading-nonalpha-no-suggest.c b/clang/test/Preprocessor/include-leading-nonalpha-no-suggest.c
new file mode 100644
index 000000000000..0d7dd1aea307
--- /dev/null
+++ b/clang/test/Preprocessor/include-leading-nonalpha-no-suggest.c
@@ -0,0 +1,3 @@
+// RUN: %clang_cc1 %s -verify
+
+#include "/non_existing_file_to_include.h" // expected-error {{'/non_existing_file_to_include.h' file not found}}
diff --git a/clang/test/Preprocessor/include-leading-nonalpha-suggest.c b/clang/test/Preprocessor/include-leading-nonalpha-suggest.c
new file mode 100644
index 000000000000..98ac862838c0
--- /dev/null
+++ b/clang/test/Preprocessor/include-leading-nonalpha-suggest.c
@@ -0,0 +1,3 @@
+// RUN: %clang_cc1 %s -verify
+
+#include "/empty_file_to_include.h" // expected-error {{'/empty_file_to_include.h' file not found, did you mean 'empty_file_to_include.h'?}}