diff --git a/client/Windows/wf_cliprdr.c b/client/Windows/wf_cliprdr.c
index 8d1cfd94b..7b2abf758 100644
--- a/client/Windows/wf_cliprdr.c
+++ b/client/Windows/wf_cliprdr.c
@@ -1289,9 +1289,11 @@ static UINT cliprdr_send_format_list(wfClipboard* clipboard)
 
 	for (index = 0; index < numFormats; index++)
 	{
-		GetClipboardFormatNameA(formats[index].formatId, formatName,
-		                        sizeof(formatName));
-		formats[index].formatName = _strdup(formatName);
+		if(GetClipboardFormatNameA(formats[index].formatId, formatName,
+		                        sizeof(formatName)))
+		{
+			formats[index].formatName = _strdup(formatName);
+		}
 	}
 
 	formatList.numFormats = numFormats;