diff --git a/build/shared/lib/keywords.txt b/build/shared/lib/keywords.txt
index 958f60bd3..820b91214 100644
--- a/build/shared/lib/keywords.txt
+++ b/build/shared/lib/keywords.txt
@@ -9,6 +9,8 @@ DISPLAY	LITERAL1
 PI	LITERAL1
 HALF_PI	LITERAL1
 TWO_PI	LITERAL1
+LSBFIRST	LITERAL1
+MSBFIRST	LITERAL1
 false	LITERAL1	
 true	LITERAL1	
 null	LITERAL1	
@@ -133,7 +135,6 @@ read	KEYWORD2
 print	KEYWORD2
 write	KEYWORD2
 println	KEYWORD2
-pulseIn	KEYWORD2
 available	KEYWORD2
 digitalWrite	KEYWORD2
 digitalRead	KEYWORD2
@@ -151,3 +152,5 @@ printHex	KEYWORD2
 printOctal	KEYWORD2
 printBinary	KEYWORD2
 printNewline	KEYWORD2
+pulseIn	KEYWORD2
+shiftOut	KEYWORD2
\ No newline at end of file