diff --git a/ichspi.c b/ichspi.c
index 18f0d3f..0fc96ba 100644
--- a/ichspi.c
+++ b/ichspi.c
@@ -1576,7 +1576,7 @@
 
 static bool ich_spi_probe_opcode(const struct flashctx *flash, uint8_t opcode)
 {
-	return find_opcode(curopcodes, opcode) >= 0;
+	return !ichspi_lock || find_opcode(curopcodes, opcode) >= 0;
 }
 
 #define ICH_BMWAG(x) ((x >> 24) & 0xff)