diff --git a/flashprog.c b/flashprog.c
index 30e5668..8102f21 100644
--- a/flashprog.c
+++ b/flashprog.c
@@ -828,7 +828,7 @@
 		return 1;
 	}
 
-	if (flash->chip->bustype == BUS_SPI) {
+	if (flash->chip->bustype == BUS_SPI && flash->chip->spi_cmd_set == SPI25) {
 		bool native_4ba;
 		int i;