diff --git a/README.md b/README.md
index 99cee86..7d417ef 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ Example values:
 > [!NOTE]
 > J1, J2, J3 are optional. Use them to pick up the square waves and display them on a oscilloscope. J3 is ground.
 
-### PD
+### Intellectual property (IP)
 
 This work is dedicated to the public domain.