diff --git a/src/db.rs b/src/db.rs
index 402d2f7..87d38c7 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -2,7 +2,7 @@ use crate::{config::CONFIG, prisma::PrismaClient};
 
 pub async fn get_prisma_client() -> PrismaClient {
     let database_url: String = format!(
-        "postgresql://{}:{}@{}:{}/{}?connection_limit=4",
+        "postgresql://{}:{}@{}:{}/{}?connection_limit=10",
         CONFIG.postgres_user,
         CONFIG.postgres_password,
         CONFIG.postgres_host,
diff --git a/src/views/authors.rs b/src/views/authors.rs
index 6477fb3..8282bf0 100644
--- a/src/views/authors.rs
+++ b/src/views/authors.rs
@@ -185,7 +185,7 @@ async fn get_author_books_available_types(
         file_types.insert(book.file_type.clone());
     }
 
-    if file_types.contains(&"fb2".to_string()) {
+    if file_types.contains("fb2") {
         file_types.insert("epub".to_string());
         file_types.insert("mobi".to_string());
         file_types.insert("fb2zip".to_string());
diff --git a/src/views/sequences.rs b/src/views/sequences.rs
index 7db4739..69bd610 100644
--- a/src/views/sequences.rs
+++ b/src/views/sequences.rs
@@ -139,7 +139,7 @@ async fn get_sequence_available_types(
         file_types.insert(book.file_type.clone());
     }
 
-    if file_types.contains(&"fb2".to_string()) {
+    if file_types.contains("fb2") {
         file_types.insert("epub".to_string());
         file_types.insert("mobi".to_string());
         file_types.insert("fb2zip".to_string());
diff --git a/src/views/translators.rs b/src/views/translators.rs
index f1fc5bd..d25c53b 100644
--- a/src/views/translators.rs
+++ b/src/views/translators.rs
@@ -105,7 +105,7 @@ async fn get_translated_books_available_types(
         file_types.insert(book.file_type.clone());
     }
 
-    if file_types.contains(&"fb2".to_string()) {
+    if file_types.contains("fb2") {
         file_types.insert("epub".to_string());
         file_types.insert("mobi".to_string());
         file_types.insert("fb2zip".to_string());