diff --git a/firmware/keyboard/ergodox/controller/mcp23018.md b/firmware/keyboard/ergodox/controller/mcp23018.md
index 22605da..3cdeac9 100644
--- a/firmware/keyboard/ergodox/controller/mcp23018.md
+++ b/firmware/keyboard/ergodox/controller/mcp23018.md
@@ -21,7 +21,7 @@
                               SDA +13       16+ RESET
                                NC +14-------15+ ADDR
 
-### MCP32018 Pin Assignments
+### MCP23018 Pin Assignments
 
          power_negative  Vss(GND) +01---.---28o NC
                                NC o02       27o GPA7