diff --git a/src/sheet_dao.rs b/src/sheet_dao.rs
index 3347fa3..361defa 100644
--- a/src/sheet_dao.rs
+++ b/src/sheet_dao.rs
@@ -81,6 +81,19 @@ pub async fn get_composer_by_id(database: &Database, id: i64) -> sqlx::Result<Co
         .await
 }
 
+pub async fn remove_duplicate_sheets(database: &Database) -> sqlx::Result<()> {
+    for kind in SheetKindDiscriminants::iter() {
+        let table = kind.get_database_table_name();
+        sqlx::query(&format!(
+            "DELETE FROM {} WHERE id NOT IN (SELECT MIN(id) FROM {} GROUP BY file_hash)",
+            table, table
+        ))
+        .execute(&database.connection)
+        .await?;
+    }
+    Ok(())
+}
+
 pub async fn fetch_all_sheets(database: &Database) -> sqlx::Result<Vec<Sheet>> {
     let mut sheets: Vec<Sheet> = Vec::new();
 
diff --git a/src/sheet_validation.rs b/src/sheet_validation.rs
index 4ea7efa..0900ba0 100644
--- a/src/sheet_validation.rs
+++ b/src/sheet_validation.rs
@@ -13,6 +13,8 @@ pub async fn load_and_validate_sheets(
     database: &Database,
     directory: impl AsRef<Path>,
 ) -> Vec<Sheet> {
+    sheet_dao::remove_duplicate_sheets(database).await.unwrap();
+
     let sheets = sheet_dao::fetch_all_sheets(database).await.unwrap();
 
     debug!("Validating sheets from database...");