diff --git a/src-tauri/src/config.rs b/src-tauri/src/config.rs
index b9af21a..8a345ef 100644
--- a/src-tauri/src/config.rs
+++ b/src-tauri/src/config.rs
@@ -135,6 +135,9 @@ pub struct HikariConfig {
 
     #[serde(default = "default_background_image_opacity")]
     pub background_image_opacity: f32,
+
+    #[serde(default)]
+    pub show_thinking_blocks: bool,
 }
 
 impl Default for HikariConfig {
@@ -172,6 +175,7 @@ impl Default for HikariConfig {
             trusted_workspaces: Vec::new(),
             background_image_path: None,
             background_image_opacity: 0.3,
+            show_thinking_blocks: false,
         }
     }
 }
@@ -286,6 +290,7 @@ mod tests {
         assert!(!config.use_worktree);
         assert!(!config.disable_1m_context);
         assert!(config.trusted_workspaces.is_empty());
+        assert!(!config.show_thinking_blocks);
     }
 
     #[test]
@@ -323,6 +328,7 @@ mod tests {
             trusted_workspaces: vec!["/home/naomi/projects/trusted".to_string()],
             background_image_path: Some("/home/naomi/bg.png".to_string()),
             background_image_opacity: 0.25,
+            show_thinking_blocks: true,
         };
 
         let json = serde_json::to_string(&config).unwrap();