diff --git a/test/beast/core/CMakeLists.txt b/test/beast/core/CMakeLists.txt
index c74d8c02..7f3914d2 100644
--- a/test/beast/core/CMakeLists.txt
+++ b/test/beast/core/CMakeLists.txt
@@ -18,6 +18,14 @@ add_executable (tests-beast-core
     Jamfile
     buffer_test.hpp
     file_test.hpp
+    _detail_base64.cpp
+    _detail_buffer.cpp
+    _detail_clamp.cpp
+    _detail_read.cpp
+    _detail_sha1.cpp
+    _detail_tuple.cpp
+    _detail_variant.cpp
+    _detail_varint.cpp
     bind_handler.cpp
     buffer_traits.cpp
     buffered_read_stream.cpp
@@ -46,14 +54,6 @@ add_executable (tests-beast-core
     string.cpp
     string_param.cpp
     type_traits.cpp
-    detail_base64.cpp
-    detail_buffer.cpp
-    detail_clamp.cpp
-    detail_read.cpp
-    detail_sha1.cpp
-    detail_tuple.cpp
-    detail_variant.cpp
-    detail_varint.cpp
 )
 
 set_property(TARGET tests-beast-core PROPERTY FOLDER "tests")
diff --git a/test/beast/core/Jamfile b/test/beast/core/Jamfile
index a634e848..a5bdeabd 100644
--- a/test/beast/core/Jamfile
+++ b/test/beast/core/Jamfile
@@ -8,6 +8,14 @@
 #
 
 local SOURCES =
+    _detail_base64.cpp
+    _detail_buffer.cpp
+    _detail_clamp.cpp
+    _detail_read.cpp
+    _detail_sha1.cpp
+    _detail_tuple.cpp
+    _detail_variant.cpp
+    _detail_varint.cpp
     bind_handler.cpp
     buffer_traits.cpp
     buffered_read_stream.cpp
@@ -36,14 +44,6 @@ local SOURCES =
     string.cpp
     string_param.cpp
     type_traits.cpp
-    detail_base64.cpp
-    detail_buffer.cpp
-    detail_clamp.cpp
-    detail_read.cpp
-    detail_sha1.cpp
-    detail_tuple.cpp
-    detail_variant.cpp
-    detail_varint.cpp
     ;
 
 local RUN_TESTS ;
diff --git a/test/beast/core/detail_base64.cpp b/test/beast/core/_detail_base64.cpp
similarity index 100%
rename from test/beast/core/detail_base64.cpp
rename to test/beast/core/_detail_base64.cpp
diff --git a/test/beast/core/detail_buffer.cpp b/test/beast/core/_detail_buffer.cpp
similarity index 100%
rename from test/beast/core/detail_buffer.cpp
rename to test/beast/core/_detail_buffer.cpp
diff --git a/test/beast/core/detail_clamp.cpp b/test/beast/core/_detail_clamp.cpp
similarity index 100%
rename from test/beast/core/detail_clamp.cpp
rename to test/beast/core/_detail_clamp.cpp
diff --git a/test/beast/core/detail_read.cpp b/test/beast/core/_detail_read.cpp
similarity index 100%
rename from test/beast/core/detail_read.cpp
rename to test/beast/core/_detail_read.cpp
diff --git a/test/beast/core/detail_sha1.cpp b/test/beast/core/_detail_sha1.cpp
similarity index 100%
rename from test/beast/core/detail_sha1.cpp
rename to test/beast/core/_detail_sha1.cpp
diff --git a/test/beast/core/detail_tuple.cpp b/test/beast/core/_detail_tuple.cpp
similarity index 100%
rename from test/beast/core/detail_tuple.cpp
rename to test/beast/core/_detail_tuple.cpp
diff --git a/test/beast/core/detail_variant.cpp b/test/beast/core/_detail_variant.cpp
similarity index 100%
rename from test/beast/core/detail_variant.cpp
rename to test/beast/core/_detail_variant.cpp
diff --git a/test/beast/core/detail_varint.cpp b/test/beast/core/_detail_varint.cpp
similarity index 100%
rename from test/beast/core/detail_varint.cpp
rename to test/beast/core/_detail_varint.cpp