diff --git a/k5prog.c b/k5prog.c
index aa1327f..f5c711e 100644
--- a/k5prog.c
+++ b/k5prog.c
@@ -600,7 +600,11 @@ int wait_flash_message(int fd,int ntimes) {
 		 *  0x000020: 00 00 00 20                                       ...                
 		 */
 
-		if ((cmd->cmd[2]!=0x20)||(cmd->cmd[3]!=0x0)||(cmd->cmd[4]!=0x1)||(cmd->cmd[5]!=0x2)||(cmd->cmd[6]!=0x2)) {
+		if (
+			((cmd->cmd[2]!=0x20)||(cmd->cmd[3]!=0x0)||(cmd->cmd[4]!=0x1)||(cmd->cmd[5]!=0x2)||(cmd->cmd[6]!=0x2))
+			&&
+			((cmd->cmd[9]!=0x53)||(cmd->cmd[10]!=0x50)||(cmd->cmd[11]!=0x4a)||(cmd->cmd[12]!=0x37)||(cmd->cmd[13]!=0x47))
+		) {
 			printf("wait_flash_message: got unexpected packet contents\n");
 			destroy_k5_struct(cmd);
 			continue;