diff --git a/dexed_sd.h b/dexed_sd.h
index 0e7b34b..c2c6853 100644
--- a/dexed_sd.h
+++ b/dexed_sd.h
@@ -55,13 +55,13 @@ bool get_sd_voice(File sysex, uint8_t voice_number, uint8_t* data);
 bool put_sd_voice(File sysex, uint8_t voice_number, uint8_t* data);
 bool save_sd_bank(const char* bank_filename, uint8_t* data);
 
-bool load_sd_voiceconfig_json(int8_t vc, uint8_t instance_id);
-bool save_sd_voiceconfig_json(uint8_t vc, uint8_t instance_id);
+bool load_sd_voiceconfig_json(uint8_t vc, uint8_t instance_id, uint8_t target);
+bool save_sd_voiceconfig_json(uint8_t vc, uint8_t instance_id, uint8_t target);
 
-bool load_sd_fx_json(int8_t fx);
-bool save_sd_fx_json(uint8_t fx);
+bool load_sd_fx_json(uint8_t fx, uint8_t target);
+bool save_sd_fx_json(uint8_t fx, uint8_t target);
 
-bool load_sd_performance_json(int8_t p);
+bool load_sd_performance_json(uint8_t p);
 bool save_sd_performance_json(uint8_t p);
 
 bool load_sd_seq_json(uint8_t p);