diff --git a/README.md b/README.md
index be6751ab..cf4b72be 100644
--- a/README.md
+++ b/README.md
@@ -122,6 +122,7 @@ GLFW bundles a number of dependencies in the `deps/` directory.
  - [Win32] Bugfix: The wrong incorrect physical size was returned for
                    non-primary monitors
  - [Win32] Bugfix: X-axis scroll offsets were inverted
+ - [Win32] Bugfix: The Optimus HPG forcing variable was not correctly exported
  - [X11] Added run-time support for systems lacking the XKB extension
  - [X11] Made GLX 1.3 the minimum supported version
  - [X11] Replaced `XRRGetScreenResources` with `XRRGetScreenResourcesCurrent`
diff --git a/src/win32_init.c b/src/win32_init.c
index 5b1c18bb..f84754f8 100644
--- a/src/win32_init.c
+++ b/src/win32_init.c
@@ -41,7 +41,7 @@
 // Applications exporting this symbol with this value will be automatically
 // directed to the high-performance GPU on nVidia Optimus systems
 //
-GLFWAPI DWORD NvOptimusEnablement = 0x00000001;
+__declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
 
 #endif // _GLFW_USE_OPTIMUS_HPG