diff --git a/dexed_sysex.cpp b/dexed_sysex.cpp
index f865f6a..3beff96 100644
--- a/dexed_sysex.cpp
+++ b/dexed_sysex.cpp
@@ -223,8 +223,8 @@ bool load_sysex(uint8_t b, uint8_t v, uint8_t instance_id)
 #if DEBUG
   bool found = false;
 #endif
-  v = constrain(v, 1, MAX_VOICES);
-  b = constrain(b, 1, MAX_BANKS);
+  v = constrain(v, 0, MAX_VOICES);
+  b = constrain(b, 0, MAX_BANKS);
 
   if (sd_card_available)
   {