diff --git a/winpr/libwinpr/clipboard/synthetic.c b/winpr/libwinpr/clipboard/synthetic.c
index 942301387..2cd3a9127 100644
--- a/winpr/libwinpr/clipboard/synthetic.c
+++ b/winpr/libwinpr/clipboard/synthetic.c
@@ -78,7 +78,10 @@ static void* clipboard_synthesize_cf_text(wClipboard* clipboard, UINT32 formatId
 		pDstData = ConvertLineEndingToCRLF(data, &size);
 
 		if (!pDstData || (size > *pSize))
+		{
+			free(pDstData);
 			return NULL;
+		}
 
 		*pSize = (UINT32)size;
 		return pDstData;