diff --git a/build/shared/lib/keywords.txt b/build/shared/lib/keywords.txt
index 637f9a076..88a9af13a 100644
--- a/build/shared/lib/keywords.txt
+++ b/build/shared/lib/keywords.txt
@@ -115,6 +115,7 @@ analogRead	KEYWORD2	AnalogRead
 analogWrite	KEYWORD2	AnalogWrite
 attachInterrupt	KEYWORD2	AttachInterrupt
 detachInterrupt	KEYWORD2	DetachInterrupt
+digitalPinToInterrupt KEYWORD2 DigitalPinToInterrupt
 delay	KEYWORD2	Delay
 delayMicroseconds	KEYWORD2	DelayMicroseconds
 digitalWrite	KEYWORD2	DigitalWrite