1 files changed, 6 insertions, 0 deletions

diff --git a/src/parser/event_parser/grammar/expressions.rs b/src/parser/event_parser/grammar/expressions.rs
index c81dc6c35..8caaf3553 100644
--- a/src/parser/event_parser/grammar/expressions.rs
+++ b/src/parser/event_parser/grammar/expressions.rs
@@ -12,3 +12,9 @@ pub(super) fn literal(p: &mut Parser) -> bool {
         _ => false,
     }
 }
+
+pub(super) fn expr(p: &mut Parser) {
+    if !literal(p) {
+        p.error().message("expected expression").emit();
+    }
+}