diff --git a/README.md b/README.md
index 0391468..dd40d82 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,6 @@ Emulator exit codes:
 - `0` - never happens
 - `1` - invalid opcode
 - `2` - illegal instruction argument (like funct3)
-- `3` - memory error (for example writing to ROM)
 
 Compile:
 1. Dependencies: `libelf`