diff --git a/compiler/test/compilable/ddoc4162.d b/compiler/test/compilable/ddoc4162.d
index dd2447580d..f609fc9d04 100644
--- a/compiler/test/compilable/ddoc4162.d
+++ b/compiler/test/compilable/ddoc4162.d
@@ -1,4 +1,4 @@
-﻿// PERMUTE_ARGS:
+// PERMUTE_ARGS:
 // REQUIRED_ARGS: -D -Dd${RESULTS_DIR}/compilable -o-
 // POST_SCRIPT: compilable/extra-files/ddocAny-postscript.sh
 
diff --git a/compiler/test/compilable/ddoc5446.d b/compiler/test/compilable/ddoc5446.d
index 29cb8c9cef..2da477f670 100644
--- a/compiler/test/compilable/ddoc5446.d
+++ b/compiler/test/compilable/ddoc5446.d
@@ -1,4 +1,4 @@
-﻿// PERMUTE_ARGS:
+// PERMUTE_ARGS:
 // REQUIRED_ARGS: -D -Dd${RESULTS_DIR}/compilable -o-
 // EXTRA_FILES: ddoc5446a.d ddoc5446b.d
 // POST_SCRIPT: compilable/extra-files/ddocAny-postscript.sh
diff --git a/compiler/test/compilable/ddoc7795.d b/compiler/test/compilable/ddoc7795.d
index 2a6ba02787..9ad7740710 100644
--- a/compiler/test/compilable/ddoc7795.d
+++ b/compiler/test/compilable/ddoc7795.d
@@ -1,4 +1,4 @@
-﻿// PERMUTE_ARGS:
+// PERMUTE_ARGS:
 // REQUIRED_ARGS: -D -Dd${RESULTS_DIR}/compilable -o-
 // POST_SCRIPT: compilable/extra-files/ddocAny-postscript.sh
 
diff --git a/compiler/test/compilable/ddoc12.d b/compiler/test/compilable/ddoc_bom_UTF8.d
similarity index 100%
rename from compiler/test/compilable/ddoc12.d
rename to compiler/test/compilable/ddoc_bom_UTF8.d
diff --git a/compiler/test/compilable/extra-files/ddoc12.html b/compiler/test/compilable/extra-files/ddoc_bom_UTF8.html
similarity index 95%
rename from compiler/test/compilable/extra-files/ddoc12.html
rename to compiler/test/compilable/extra-files/ddoc_bom_UTF8.html
index f88da65b66..117deb750d 100644
--- a/compiler/test/compilable/extra-files/ddoc12.html
+++ b/compiler/test/compilable/extra-files/ddoc_bom_UTF8.html
@@ -3,7 +3,7 @@
 <html>
   <head>
     <meta charset="UTF-8">
-    <title>ddoc12</title>
+    <title>ddoc_bom_UTF8</title>
     <style type="text/css" media="screen">
       html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p,
       blockquote, pre, a, abbr, address, cite, code, del, dfn, em, figure,
@@ -512,7 +512,7 @@
   <body id="ddoc_main" class="ddoc dlang">
     <div class="content_wrapper">
       <article class="module">
-        <h1 class="module_name">ddoc12</h1>
+        <h1 class="module_name">ddoc_bom_UTF8</h1>
         <section id="module_content">
 <section class="section ddoc_module_members_section">
   <div class="ddoc_module_members">
diff --git a/compiler/test/fail_compilation/gag4269a.d b/compiler/test/fail_compilation/gag4269a.d
index 3ab4db7786..85a146c14a 100644
--- a/compiler/test/fail_compilation/gag4269a.d
+++ b/compiler/test/fail_compilation/gag4269a.d
@@ -1,4 +1,4 @@
-﻿// REQUIRED_ARGS: -c -o-
+// REQUIRED_ARGS: -c -o-
 /*
 TEST_OUTPUT:
 ---
diff --git a/compiler/test/fail_compilation/gag4269b.d b/compiler/test/fail_compilation/gag4269b.d
index 718fa942ef..e680721b21 100644
--- a/compiler/test/fail_compilation/gag4269b.d
+++ b/compiler/test/fail_compilation/gag4269b.d
@@ -1,4 +1,4 @@
-﻿// REQUIRED_ARGS: -c -o-
+// REQUIRED_ARGS: -c -o-
 /*
 TEST_OUTPUT:
 ---
diff --git a/compiler/test/fail_compilation/gag4269c.d b/compiler/test/fail_compilation/gag4269c.d
index 1a9383148c..1fa1567cde 100644
--- a/compiler/test/fail_compilation/gag4269c.d
+++ b/compiler/test/fail_compilation/gag4269c.d
@@ -1,4 +1,4 @@
-﻿// REQUIRED_ARGS: -c -o-
+// REQUIRED_ARGS: -c -o-
 /*
 TEST_OUTPUT:
 ---
diff --git a/compiler/test/fail_compilation/gag4269d.d b/compiler/test/fail_compilation/gag4269d.d
index bdfabaecc9..3154ea580f 100644
--- a/compiler/test/fail_compilation/gag4269d.d
+++ b/compiler/test/fail_compilation/gag4269d.d
@@ -1,4 +1,4 @@
-﻿// REQUIRED_ARGS: -c -o-
+// REQUIRED_ARGS: -c -o-
 /*
 TEST_OUTPUT:
 ---
diff --git a/compiler/test/fail_compilation/gag4269e.d b/compiler/test/fail_compilation/gag4269e.d
index d6eed626b8..4a5757cdd7 100644
--- a/compiler/test/fail_compilation/gag4269e.d
+++ b/compiler/test/fail_compilation/gag4269e.d
@@ -1,4 +1,4 @@
-﻿// REQUIRED_ARGS: -c -o-
+// REQUIRED_ARGS: -c -o-
 /*
 TEST_OUTPUT:
 ---
diff --git a/compiler/test/fail_compilation/gag4269f.d b/compiler/test/fail_compilation/gag4269f.d
index b571059eb4..db781e9879 100644
--- a/compiler/test/fail_compilation/gag4269f.d
+++ b/compiler/test/fail_compilation/gag4269f.d
@@ -1,4 +1,4 @@
-﻿// REQUIRED_ARGS: -c -o-
+// REQUIRED_ARGS: -c -o-
 /*
 TEST_OUTPUT:
 ---
diff --git a/compiler/test/fail_compilation/gag4269g.d b/compiler/test/fail_compilation/gag4269g.d
index 348207e0d5..4799fa13c1 100644
--- a/compiler/test/fail_compilation/gag4269g.d
+++ b/compiler/test/fail_compilation/gag4269g.d
@@ -1,4 +1,4 @@
-﻿// REQUIRED_ARGS: -c -o-
+// REQUIRED_ARGS: -c -o-
 /*
 TEST_OUTPUT:
 ---
diff --git a/compiler/test/fail_compilation/ice10599.d b/compiler/test/fail_compilation/ice10599.d
index 6e9649c486..378894db46 100644
--- a/compiler/test/fail_compilation/ice10599.d
+++ b/compiler/test/fail_compilation/ice10599.d
@@ -1,4 +1,4 @@
-﻿// https://issues.dlang.org/show_bug.cgi?id=10599
+// https://issues.dlang.org/show_bug.cgi?id=10599
 // ICE(interpret.c)
 /*
 TEST_OUTPUT:
diff --git a/compiler/test/runnable/helloUTF16.d b/compiler/test/runnable/bom_UTF16.d
similarity index 100%
rename from compiler/test/runnable/helloUTF16.d
rename to compiler/test/runnable/bom_UTF16.d
diff --git a/compiler/test/runnable/helloUTF16BE.d b/compiler/test/runnable/bom_UTF16BE.d
similarity index 100%
rename from compiler/test/runnable/helloUTF16BE.d
rename to compiler/test/runnable/bom_UTF16BE.d
diff --git a/compiler/test/runnable/testUTF32.d b/compiler/test/runnable/bom_UTF32.d
similarity index 100%
rename from compiler/test/runnable/testUTF32.d
rename to compiler/test/runnable/bom_UTF32.d
diff --git a/compiler/test/runnable/helloUTF8.d b/compiler/test/runnable/bom_UTF8.d
similarity index 96%
rename from compiler/test/runnable/helloUTF8.d
rename to compiler/test/runnable/bom_UTF8.d
index aed66134f0..1dbc01d7e2 100644
--- a/compiler/test/runnable/helloUTF8.d
+++ b/compiler/test/runnable/bom_UTF8.d
@@ -1,4 +1,4 @@
-/*
+﻿/*
 PERMUTE_ARGS:
 RUN_OUTPUT:
 ---
