Added glfwGetVersionString.
diff --git a/src/internal.h b/src/internal.h
index e49277c..2c60e50 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -235,9 +235,7 @@
 // Init/terminate
 int _glfwPlatformInit(void);
 int _glfwPlatformTerminate(void);
-
-// Error handling
-void _glfwSetError(int error);
+const char* _glfwPlatformGetVersionString(void);
 
 // Enable/Disable
 void _glfwPlatformEnableSystemKeys(_GLFWwindow* window);
@@ -285,6 +283,9 @@
 // Prototypes for platform independent internal functions
 //========================================================================
 
+// Error handling
+void _glfwSetError(int error);
+
 // Window management (window.c)
 void _glfwClearWindowHints(void);