diff --git a/spf.lark b/spf.lark
index cc39036..d542453 100644
--- a/spf.lark
+++ b/spf.lark
@@ -17,7 +17,7 @@ controls: test
 
 test: "si" expression "alors" "{" instruction* "}"
 
-loop: "si" expression "alors" { (instruction)* }
+loop: "si" expression "alors" "{" (instruction)* "}"
 
 COMMENT: "#" /[^\n]/
 %ignore COMMENT