diff --git a/doc/4-instrument/tia.md b/doc/4-instrument/tia.md
index 704d3aa21..af72dfe28 100644
--- a/doc/4-instrument/tia.md
+++ b/doc/4-instrument/tia.md
@@ -3,6 +3,6 @@
 The TIA instrument editor consists of these macros:
 
 - **Volume**: volume sequence
-- **Arpeggio**: pitch sequencr
+- **Arpeggio**: pitch sequence
 - **Waveform**: 1-bit polynomial pattern type sequence
 - **Pitch**: "fine" pitch