diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 5094226..8021f96 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -6718,8 +6718,15 @@ CreateCastStmt: CREATE CAST '(' Typename AS Typename ')'
 				}
 		;
 
-cast_context:  AS IMPLICIT_P					{ $$ = COERCION_IMPLICIT; }
-		| AS ASSIGNMENT							{ $$ = COERCION_ASSIGNMENT; }
+cast_context:  AS name
+				{
+					if (pg_strcasecmp($2, "EXPLICIT") == 0)
+						$$ = COERCION_EXPLICIT;
+					else if (pg_strcasecmp($2, "IMPLICIT") == 0)
+						$$ = COERCION_IMPLICIT;
+					else
+						elog(ERROR, "frak!");
+				}
 		| /*EMPTY*/								{ $$ = COERCION_EXPLICIT; }
 		;