diff --git a/Misc/NEWS.d/next/Library/2020-01-13-23-37-58.bpo-39273.m5hzxV.rst b/Misc/NEWS.d/next/Library/2020-01-13-23-37-58.bpo-39273.m5hzxV.rst
new file mode 100644
index 00000000000..c942da07da3
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2020-01-13-23-37-58.bpo-39273.m5hzxV.rst
@@ -0,0 +1,2 @@
+The ``BUTTON5_*`` constants are now exposed in the :mod:`curses` module if
+available.
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index c2ce3a968fa..0246c23941b 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -4691,6 +4691,14 @@ PyInit__curses(void)
     SetDictInt("BUTTON4_DOUBLE_CLICKED",   BUTTON4_DOUBLE_CLICKED);
     SetDictInt("BUTTON4_TRIPLE_CLICKED",   BUTTON4_TRIPLE_CLICKED);
 
+#if NCURSES_MOUSE_VERSION > 1
+    SetDictInt("BUTTON5_PRESSED",          BUTTON5_PRESSED);
+    SetDictInt("BUTTON5_RELEASED",         BUTTON5_RELEASED);
+    SetDictInt("BUTTON5_CLICKED",          BUTTON5_CLICKED);
+    SetDictInt("BUTTON5_DOUBLE_CLICKED",   BUTTON5_DOUBLE_CLICKED);
+    SetDictInt("BUTTON5_TRIPLE_CLICKED",   BUTTON5_TRIPLE_CLICKED);
+#endif
+
     SetDictInt("BUTTON_SHIFT",             BUTTON_SHIFT);
     SetDictInt("BUTTON_CTRL",              BUTTON_CTRL);
     SetDictInt("BUTTON_ALT",               BUTTON_ALT);