diff --git a/include/IOSOperator.h b/include/IOSOperator.h
index 6e5768aa..41f02e2f 100644
--- a/include/IOSOperator.h
+++ b/include/IOSOperator.h
@@ -18,13 +18,6 @@ public:
 	//! Get the current operation system version as string.
 	virtual const core::stringc& getOperatingSystemVersion() const = 0;
 
-	//! Get the current operation system version as string.
-	/** \deprecated Use getOperatingSystemVersion instead. This method will be removed in Irrlicht 1.9. */
-	_IRR_DEPRECATED_ const wchar_t* getOperationSystemVersion() const
-	{
-		return core::stringw(getOperatingSystemVersion()).c_str();
-	}
-
 	//! Copies text to the clipboard
 	//! \param text: text in utf-8
 	virtual void copyToClipboard(const c8* text) const = 0;