diff --git a/otp.hpp b/otp.hpp
index b79ac10..dc4a36e 100644
--- a/otp.hpp
+++ b/otp.hpp
@@ -7,10 +7,10 @@ namespace eink {
 
 // [SOURCE]_[VCOM]
 enum class Voltage : std::uint8_t {
-	VSS_DCVCOM = 0b00,
-	VSH1_VSH1DCVCOM = 0b01,
-	VSL_VSLDCVCOM = 0b10,
-	VSH2_NA = 0b11,
+	VSS1 = 0b00,
+	VSH1 = 0b01,
+	VSL1 = 0b10,
+	VSH2 = 0b11,
 };
 
 struct [[gnu::packed]] Phases