diff --git a/libuavcan/include/uavcan/error.hpp b/libuavcan/include/uavcan/error.hpp
index 9158dec82a..9969135dea 100644
--- a/libuavcan/include/uavcan/error.hpp
+++ b/libuavcan/include/uavcan/error.hpp
@@ -16,7 +16,6 @@ namespace
  * Functions that return signed integers may also return inverted error codes,
  * i.e. returned value should be inverted back to get the actual error code.
  */
-const int16_t ErrOk                      = 0;
 const int16_t ErrFailure                 = 1;
 const int16_t ErrInvalidParam            = 2;
 const int16_t ErrMemory                  = 3;