diff --git a/src/parser/document.rs b/src/parser/document.rs
index 3eb3eeb..f71aaee 100644
--- a/src/parser/document.rs
+++ b/src/parser/document.rs
@@ -6,6 +6,7 @@ use nom::multi::many0;
 
 use super::headline::heading;
 use super::in_buffer_settings::apply_in_buffer_settings;
+use super::in_buffer_settings::apply_post_parse_in_buffer_settings;
 use super::in_buffer_settings::scan_for_in_buffer_settings;
 use super::org_source::OrgSource;
 use super::section::zeroth_section;
@@ -168,25 +169,17 @@ fn document_org_source<'b, 'g, 'r, 's>(
             let mut new_global_settings = context.get_global_settings().clone();
             new_global_settings.radio_targets = all_radio_targets;
             let parser_context = context.with_global_settings(&new_global_settings);
-            let (remaining, document) = _document(&parser_context, input)
+            let (remaining, mut document) = _document(&parser_context, input)
                 .map(|(rem, out)| (Into::<&str>::into(rem), out))?;
+            apply_post_parse_in_buffer_settings(&mut document)
+                .map_err(|err| nom::Err::<CustomError<OrgSource<'_>>>::Failure(err.into()))?;
             return Ok((remaining.into(), document));
         }
     }
 
     // Find final in-buffer settings that do not impact parsing
-    document.category = Into::<AstNode>::into(&document)
-        .into_iter()
-        .filter_map(|ast_node| {
-            if let AstNode::Keyword(ast_node) = ast_node {
-                if ast_node.key.eq_ignore_ascii_case("category") {
-                    return Some(ast_node);
-                }
-            }
-            None
-        })
-        .last()
-        .map(|kw| kw.value.to_owned());
+    apply_post_parse_in_buffer_settings(&mut document)
+        .map_err(|err| nom::Err::<CustomError<OrgSource<'_>>>::Failure(err.into()))?;
 
     Ok((remaining.into(), document))
 }
diff --git a/src/parser/in_buffer_settings.rs b/src/parser/in_buffer_settings.rs
index 167d428..3586d2f 100644
--- a/src/parser/in_buffer_settings.rs
+++ b/src/parser/in_buffer_settings.rs
@@ -11,7 +11,9 @@ use super::OrgSource;
 use crate::context::HeadlineLevelFilter;
 use crate::error::CustomError;
 use crate::error::Res;
+use crate::iter::AstNode;
 use crate::settings::GlobalSettings;
+use crate::types::Document;
 use crate::types::Keyword;
 
 #[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
@@ -114,6 +116,25 @@ pub(crate) fn apply_in_buffer_settings<'g, 's, 'sf>(
     Ok(new_settings)
 }
 
+/// Apply in-buffer settings that do not impact parsing and therefore can be applied after parsing.
+pub(crate) fn apply_post_parse_in_buffer_settings<'g, 's, 'sf>(
+    document: &mut Document<'s>,
+) -> Result<(), &'static str> {
+    document.category = Into::<AstNode>::into(&*document)
+        .into_iter()
+        .filter_map(|ast_node| {
+            if let AstNode::Keyword(ast_node) = ast_node {
+                if ast_node.key.eq_ignore_ascii_case("category") {
+                    return Some(ast_node);
+                }
+            }
+            None
+        })
+        .last()
+        .map(|kw| kw.value.to_owned());
+    Ok(())
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;