diff --git a/papers/doc/7-systems/n163.md b/papers/doc/7-systems/n163.md
index 68774801c..76b750cb3 100644
--- a/papers/doc/7-systems/n163.md
+++ b/papers/doc/7-systems/n163.md
@@ -1,4 +1,4 @@
-# Namco 163
+# Namco C163
 
 This is Namco's one of NES mapper, with up to 8 wavetable channels. It has also 128 byte of internal RAM, both channel register and wavetables are stored here. Wavetables are variable size and freely allocable anywhere in RAM, it means it can be uses part of or continuously pre-loaded waveform and/or its sequences in RAM. But waveform RAM area becomes smaller as much as activating more channels; Channel register consumes 8 byte for each channels. You must avoid conflict with channel register area and waveform for avoid channel playback broken.
 
diff --git a/src/engine/sysDef.cpp b/src/engine/sysDef.cpp
index dccbd81ef..3399c67a1 100644
--- a/src/engine/sysDef.cpp
+++ b/src/engine/sysDef.cpp
@@ -176,7 +176,7 @@ String DivEngine::getSongSystemName(bool isMultiSystemAcceptable) {
         return "Famicom Disk System";
       }
       if (song.system[0]==DIV_SYSTEM_NES && song.system[1]==DIV_SYSTEM_N163) {
-        return "NES + Namco 163";
+        return "NES + Namco C163";
       }
       if (song.system[0]==DIV_SYSTEM_NES && song.system[1]==DIV_SYSTEM_MMC5) {
         return "NES + MMC5";
@@ -1234,7 +1234,7 @@ void DivEngine::registerSystems() {
   );
 
   sysDefs[DIV_SYSTEM_N163]=new DivSysDef(
-    "Namco 163", NULL, 0x8c, 0, 8, false, true, 0, false,
+    "Namco C163", NULL, 0x8c, 0, 8, false, true, 0, false,
     "an expansion chip for the Famicom, with full wavetable.",
     {"Channel 1", "Channel 2", "Channel 3", "Channel 4", "Channel 5", "Channel 6", "Channel 7", "Channel 8"},
     {"CH1", "CH2", "CH3", "CH4", "CH5", "CH6", "CH7", "CH8"},
diff --git a/src/gui/guiConst.cpp b/src/gui/guiConst.cpp
index 949d1c8c3..2b9923d3f 100644
--- a/src/gui/guiConst.cpp
+++ b/src/gui/guiConst.cpp
@@ -97,7 +97,7 @@ const char* insTypes[DIV_INS_MAX+1]={
   "FM (OPL)",
   "FDS",
   "Virtual Boy",
-  "Namco 163",
+  "Namco C163",
   "Konami SCC/Bubble System WSG",
   "FM (OPZ)",
   "POKEY",
diff --git a/src/gui/presets.cpp b/src/gui/presets.cpp
index 95a5eb694..16c78bb19 100644
--- a/src/gui/presets.cpp
+++ b/src/gui/presets.cpp
@@ -324,7 +324,7 @@ void FurnaceGUI::initSystemPresets() {
     }
   ));
   cat.systems.push_back(FurnaceGUISysDef(
-    "Namco 163", {
+    "Namco C163", {
       DIV_SYSTEM_N163, 64, 0, 0,
       0
     }
@@ -512,7 +512,7 @@ void FurnaceGUI::initSystemPresets() {
     }
   ));
   cat.systems.push_back(FurnaceGUISysDef(
-    "NES with Namco 163", {
+    "NES with Namco C163", {
       DIV_SYSTEM_NES, 64, 0, 0,
       DIV_SYSTEM_N163, 64, 0, 112,
       0