diff --git a/src/fun/parser.rs b/src/fun/parser.rs
index 8e6d31fc7..9bc672fa3 100644
--- a/src/fun/parser.rs
+++ b/src/fun/parser.rs
@@ -165,7 +165,7 @@ impl<'a> TermParser<'a> {
         self.skip_trivia();
         let (import, sub_imports) = self.parse_import()?;
         book.imports.add_import(import, sub_imports);
-        indent = self.advance_newlines();
+        indent = self.advance_newlines()?;
         last_rule = None;
         continue;
       }