diff --git a/src/core/parseStructs.go b/src/core/parseStructs.go
index e0b9fe5..4a373aa 100644
--- a/src/core/parseStructs.go
+++ b/src/core/parseStructs.go
@@ -8,7 +8,7 @@ import (
 
 // parseStructs parses the tokens of the struct field types.
 func (env *Environment) parseStructs(structs iter.Seq[*types.Struct]) error {
-	processed := map[*types.Struct]recursionState{}
+	processed := map[*types.Struct]recursionState{types.String: finished}
 
 	for structure := range structs {
 		err := env.parseStruct(structure, processed)