diff --git a/rpcs3/Emu/Cell/Modules/cellSysutilAvc.h b/rpcs3/Emu/Cell/Modules/cellSysutilAvc.h
index b8580914b2..e5b2005f09 100644
--- a/rpcs3/Emu/Cell/Modules/cellSysutilAvc.h
+++ b/rpcs3/Emu/Cell/Modules/cellSysutilAvc.h
@@ -139,9 +139,9 @@ enum CellSysUtilAvcVoiceQuality : u32
 
 struct CellSysutilAvcOptionParam
 {
-	be_t<s64> avcOptionParamVersion;
+	be_t<s32> avcOptionParamVersion;
 	b8 sharingVideoBuffer;
-	be_t<s64> maxPlayers; // Not in FW 1.70
+	be_t<s32> maxPlayers; // Not in FW 1.70
 };
 
 struct CellSysutilAvcVoiceDetectData
diff --git a/rpcs3/Emu/Cell/Modules/cellSysutilAvcExt.cpp b/rpcs3/Emu/Cell/Modules/cellSysutilAvcExt.cpp
index 2640a13d3e..c8ce91162a 100644
--- a/rpcs3/Emu/Cell/Modules/cellSysutilAvcExt.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellSysutilAvcExt.cpp
@@ -58,11 +58,9 @@ error_code cellSysutilAvcExtGetWindowShowStatus(vm::ptr<SceNpId> player_id, vm::
 	return CELL_OK;
 }
 
-error_code cellSysutilAvcExtSetChatMode(vm::ptr<CellSysutilAvcCallback> func, vm::ptr<void> userdata, sys_memory_container_t container,
-	CellSysUtilAvcMediaType media, CellSysUtilAvcVideoQuality videoQuality, CellSysUtilAvcVoiceQuality voiceQuality, vm::ptr<CellSysutilAvcOptionParam> option, vm::ptr<CellSysutilAvcRequestId> request_id)
+error_code cellSysutilAvcExtSetChatMode(u32 mode)
 {
-	cellSysutilAvcExt.todo("cellSysutilAvcExtSetChatMode(func=*0x%x, userdata=*0x%x, container=0x%x, media=0x%x, videoQuality=0x%x, voiceQuality=0x%x, option=*0x%x, request_id=*0x%x)",
-		func, userdata, container, +media, +videoQuality, +voiceQuality, option, request_id);
+	cellSysutilAvcExt.todo("cellSysutilAvcExtSetChatMode(mode=0x%x)", mode);
 	return CELL_OK;
 }
 
@@ -134,11 +132,9 @@ error_code cellSysutilAvcExtHideWindow(vm::ptr<SceNpId> player_id, CellSysutilAv
 	return CELL_OK;
 }
 
-error_code cellSysutilAvcExtSetChatGroup(vm::ptr<CellSysutilAvcCallback> func, vm::ptr<void> userdata, sys_memory_container_t container,
-	CellSysUtilAvcMediaType media, CellSysUtilAvcVideoQuality videoQuality, CellSysUtilAvcVoiceQuality voiceQuality, vm::ptr<CellSysutilAvcOptionParam> option, vm::ptr<CellSysutilAvcRequestId> request_id)
+error_code cellSysutilAvcExtSetChatGroup()
 {
-	cellSysutilAvcExt.todo("cellSysutilAvcExtSetChatGroup(func=*0x%x, userdata=*0x%x, container=0x%x, media=0x%x, videoQuality=0x%x, voiceQuality=0x%x, option=*0x%x, request_id=*0x%x)",
-		func, userdata, container, +media, +videoQuality, +voiceQuality, option, request_id);
+	cellSysutilAvcExt.todo("cellSysutilAvcExtSetChatGroup()");
 	return CELL_OK;
 }
 
@@ -178,7 +174,7 @@ error_code cellSysutilAvcExtStopMicDetection()
 	return CELL_OK;
 }
 
-error_code cellSysutilAvcExtInitOptionParam(s64 avcOptionParamVersion, vm::ptr<CellSysutilAvcOptionParam> option)
+error_code cellSysutilAvcExtInitOptionParam(s32 avcOptionParamVersion, vm::ptr<CellSysutilAvcOptionParam> option)
 {
 	cellSysutilAvcExt.todo("cellSysutilAvcExtInitOptionParam(avcOptionParamVersion=0x%x, option=*0x%x)", avcOptionParamVersion, option);
 	return CELL_OK;