diff --git a/CHANGELOG.md b/CHANGELOG.md
index 238c23a9..bfb3d9fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ Version 81:
 * better is_final on empty_base_optimization
 * Suppress incorrect GCC warning
 * multi_buffer ctor is explicit
+* File is not copy-constructible
 
 --------------------------------------------------------------------------------
 
diff --git a/test/core/file_posix.cpp b/test/core/file_posix.cpp
index 2a8bd046..347be757 100644
--- a/test/core/file_posix.cpp
+++ b/test/core/file_posix.cpp
@@ -17,6 +17,8 @@
 
 namespace beast {
 
+BOOST_STATIC_ASSERT(! std::is_copy_constructible<file_posix>::value);
+
 class file_posix_test
     : public beast::unit_test::suite
 {
diff --git a/test/core/file_stdio.cpp b/test/core/file_stdio.cpp
index 3bb61e24..95e35212 100644
--- a/test/core/file_stdio.cpp
+++ b/test/core/file_stdio.cpp
@@ -15,6 +15,8 @@
 
 namespace beast {
 
+BOOST_STATIC_ASSERT(! std::is_copy_constructible<file_stdio>::value);
+
 class file_stdio_test
     : public beast::unit_test::suite
 {
diff --git a/test/core/file_win32.cpp b/test/core/file_win32.cpp
index 91530a70..e2c3263d 100644
--- a/test/core/file_win32.cpp
+++ b/test/core/file_win32.cpp
@@ -17,6 +17,8 @@
 
 namespace beast {
 
+BOOST_STATIC_ASSERT(! std::is_copy_constructible<file_win32>::value);
+
 class file_win32_test
     : public beast::unit_test::suite
 {