diff --git a/docs/opcodes/oscillator_phase.md b/docs/opcodes/oscillator_phase.md
index b8ac54f13..06be90130 100644
--- a/docs/opcodes/oscillator_phase.md
+++ b/docs/opcodes/oscillator_phase.md
@@ -2,3 +2,4 @@
 template: "sfz/opcode.j2"
 opcode_name: "oscillator_phase"
 ---
+The range of this appears to be 0 to 360 (in degrees) as implemented in ARIA, and 0 to 1 in sfizz. Cakewalk range and behavior need to be confirmed.