diff --git a/src/parser/org_source.rs b/src/parser/org_source.rs
index c0e70f4..3f43c65 100644
--- a/src/parser/org_source.rs
+++ b/src/parser/org_source.rs
@@ -46,7 +46,7 @@ impl<'s> InputTake for OrgSource<'s> {
     }
 }
 
-impl<'s, O: Into<&'s str>> Compare<O> for OrgSource<'s> {
+impl<'s, 'o, O: Into<&'o str>> Compare<O> for OrgSource<'s> {
     fn compare(&self, t: O) -> nom::CompareResult {
         (&self.full_source[self.start..self.end]).compare(t.into())
     }