diff --git a/src/data_provider/import.rs b/src/data_provider/import.rs
index af6e1bd..54e360f 100644
--- a/src/data_provider/import.rs
+++ b/src/data_provider/import.rs
@@ -1,6 +1,6 @@
 use rusqlite::Connection;
 use serde_json::Value;
-use std::collections::HashMap;
+use hashbrown::HashMap;
 
 #[derive(Clone)]
 pub struct ImportData(pub(crate) Vec<ImportGroup>);
diff --git a/src/dictionary.rs b/src/dictionary.rs
index 2be3440..06f12e7 100644
--- a/src/dictionary.rs
+++ b/src/dictionary.rs
@@ -18,7 +18,7 @@ use iced::widget::*;
 use iced::{Border, Color, Shadow, Task};
 use iced_core::Length::Fill;
 use rand::random_range;
-use std::collections::{HashMap, HashSet};
+use hashbrown::{HashMap, HashSet};
 use std::fs;
 use std::ops::Add;
 use std::path::PathBuf;
diff --git a/src/main.rs b/src/main.rs
index e84f480..8cf0b6e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -34,7 +34,7 @@ use iced_core::window::Position;
 use iced_core::window::settings::PlatformSpecific;
 use mimalloc::MiMalloc;
 use rusqlite::Connection;
-use std::collections::HashMap;
+use hashbrown::HashMap;
 
 #[global_allocator]
 static GLOBAL: MiMalloc = MiMalloc;
diff --git a/src/navigation.rs b/src/navigation.rs
index 15cf618..5cb84fd 100644
--- a/src/navigation.rs
+++ b/src/navigation.rs
@@ -27,7 +27,7 @@ use chrono::NaiveDate;
 use iced::keyboard::Event;
 use iced::{Element, Task};
 use reqwest::Error;
-use std::collections::HashMap;
+use hashbrown::HashMap;
 use std::sync::{Arc, Mutex};
 use std::time::Instant;
 use rusqlite::Connection;
@@ -171,7 +171,9 @@ impl ScreenState {
         if let UpdateData = message {
             println!("Loading data");
             let mut state = self.app_state.lock().unwrap();
-            state.connection = Connection::open_in_memory().unwrap();
+            if cfg!(windows){
+                state.connection = Connection::open_in_memory().unwrap();
+            }
             let path = app_data_dir();
             let db_file = path.join("data.db");
             let temp_db_file = path.join("data.db.tmp");
diff --git a/src/repetitions.rs b/src/repetitions.rs
index f7f5b35..dc1d496 100644
--- a/src/repetitions.rs
+++ b/src/repetitions.rs
@@ -97,9 +97,7 @@ impl NavigatedPage<RepetitionsMessage> for RepetitionsState {
                         .iter()
                         .map(|c| self.word_id_index_map[&c.word_id])
                         .collect();
-                    println!("Already exists {:?}", added);
                     let total = set.get_word_list(&state);
-                    println!("Available{:?}", total);
 
                     self.current_sets_cards_cache.insert(index, (added, total));
 
@@ -164,14 +162,6 @@ impl NavigatedPage<RepetitionsMessage> for RepetitionsState {
                         .cloned()
                         .collect();
 
-                    for x in &cache.0 {
-                        println!("Already exists {:?}", state.dictionary.get(*x).unwrap());
-                    }
-
-                    for w in &adding {
-                        println!("{:?}", state.dictionary.get(*w).unwrap());
-                    }
-
                     let mut new_current = cache.0.clone();
                     new_current.append(&mut adding.clone());
                     total_cache.insert(index, (new_current, cache.1.clone()));