diff --git a/ppl-spark-integration/src/main/antlr4/OpenSearchPPLParser.g4 b/ppl-spark-integration/src/main/antlr4/OpenSearchPPLParser.g4
index 66bc6fe1d..3e55d27cb 100644
--- a/ppl-spark-integration/src/main/antlr4/OpenSearchPPLParser.g4
+++ b/ppl-spark-integration/src/main/antlr4/OpenSearchPPLParser.g4
@@ -259,7 +259,7 @@ trendlineCommand
    ;
 
 trendlineClause
-   : trendlineType LT_PRTHS numberOfDataPoints = integerLiteral COMMA field = fieldExpression RT_PRTHS (AS alias = qualifiedName)?
+   : trendlineType LT_PRTHS numberOfDataPoints = INTEGER_LITERAL COMMA field = fieldExpression RT_PRTHS (AS alias = qualifiedName)?
    ;
 
 trendlineType