diff --git a/src/external/win32_clipboard.h b/src/external/win32_clipboard.h
index ce986578a..08ee5f759 100644
--- a/src/external/win32_clipboard.h
+++ b/src/external/win32_clipboard.h
@@ -180,8 +180,6 @@ typedef struct tagRGBQUAD {
 
 static BOOL           OpenClipboardRetrying(HWND handle); // Open clipboard with a number of retries
 static int            GetPixelDataOffset(BITMAPINFOHEADER bih);
-static unsigned char* GetClipboardImageData(int* width, int* height, unsigned int *dataSize);
-
 
 unsigned char* Win32GetClipboardImageData(int* width, int* height, unsigned long long int *dataSize)
 {