diff --git a/src/main/java/coneforest.psylla/coneforest/psylla/core/PsyNumeric.java b/src/main/java/coneforest.psylla/coneforest/psylla/core/PsyNumeric.java
index 03815c66..bef76bc3 100644
--- a/src/main/java/coneforest.psylla/coneforest/psylla/core/PsyNumeric.java
+++ b/src/main/java/coneforest.psylla/coneforest/psylla/core/PsyNumeric.java
@@ -144,12 +144,19 @@ public sealed interface PsyNumeric
 		=ContextAction.<PsyNumeric>ofFunction(PsyNumeric::psyAbs);
 
 	/**
-	*	Context action of the {@code scos} operator.
+	*	Context action of the {@code acos} operator.
 	*/
 	@OperatorType("acos")
 	public static final ContextAction PSY_ACOS
 		=ContextAction.<PsyNumeric>ofFunction(PsyNumeric::psyAcos);
 
+	/**
+	*	Context action of the {@code asin} operator.
+	*/
+	@OperatorType("asin")
+	public static final ContextAction PSY_ASIN
+		=ContextAction.<PsyNumeric>ofFunction(PsyNumeric::psyAsin);
+
 	/**
 	*	Context action of the {@code atan} operator.
 	*/