diff --git a/Cargo.lock b/Cargo.lock
index 02b7a86..c6c6c38 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -47,9 +47,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.67"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3c69b077ad434294d3ce9f1f6143a2a4b89a8a2d54ef813d85003a4fd1137fd"
+checksum = "4c0496836a84f8d0495758516b8621a622beb77c0fed418570e50764093ced48"
 
 [[package]]
 name = "cfg-if"
@@ -148,7 +148,7 @@ dependencies = [
 
 [[package]]
 name = "pbdbfixer"
-version = "0.8.0"
+version = "0.7.2"
 dependencies = [
  "quick-xml",
  "rusqlite",
diff --git a/Cargo.toml b/Cargo.toml
index 465773a..ed4ea5a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pbdbfixer"
-version = "0.8.0"
+version = "0.7.2"
 authors = ["Martin Brodbeck <martin@brodbeck-online.de>"]
 edition = "2018"
 
diff --git a/src/database.rs b/src/database.rs
index 4c50098..0eb1214 100644
--- a/src/database.rs
+++ b/src/database.rs
@@ -9,6 +9,7 @@ pub struct BookEntry {
     filepath: String,
     author: String,
     firstauthor: String,
+    has_drm: bool,
     genre: String,
     first_author_letter: String,
     series: String,
@@ -44,6 +45,10 @@ fn get_epubs_from_database(tx: &Transaction) -> Vec<BookEntry> {
         let filepath = format!("{}/{}", prefix, filename);
         let firstauthor: String = row.get(3).unwrap_or_default();
         let author: String = row.get(4).unwrap_or_default();
+        let has_drm = match prefix.as_str() {
+            "/mnt/ext1/Digital Editions" => true,
+            _ => false,
+        };
         let genre: String = row.get(5).unwrap_or_default();
         let first_author_letter = row.get(6).unwrap_or_default();
         let series: String = row.get(7).unwrap_or_default();
@@ -53,6 +58,7 @@ fn get_epubs_from_database(tx: &Transaction) -> Vec<BookEntry> {
             filepath,
             firstauthor,
             author,
+            has_drm,
             genre,
             first_author_letter,
             series,
@@ -113,6 +119,7 @@ fn remove_ghost_books_from_db(tx: &Transaction) -> usize {
 pub struct Statistics {
     pub authors_fixed: i32,
     pub ghost_books_cleaned: usize,
+    pub drm_skipped: usize,
     pub genres_fixed: usize,
     pub sorting_fixed: usize,
     pub series_fixed: usize,
@@ -132,6 +139,7 @@ pub fn fix_db_entries() -> Statistics {
     let mut stat = Statistics {
         authors_fixed: 0,
         ghost_books_cleaned: 0,
+        drm_skipped: 0,
         genres_fixed: 0,
         sorting_fixed: 0,
         series_fixed: 0,
@@ -144,6 +152,11 @@ pub fn fix_db_entries() -> Statistics {
     let book_entries = get_epubs_from_database(&tx);
 
     for entry in book_entries {
+        if entry.has_drm {
+            stat.drm_skipped = stat.drm_skipped + 1;
+            continue;
+        }
+
         if let Some(epub_metadata) = epub::get_epub_metadata(&entry.filepath) {
             // Fix firstauthor…
             let mut firstauthors = epub_metadata
@@ -172,8 +185,7 @@ pub fn fix_db_entries() -> Statistics {
                 .unwrap_or_default()
                 .to_string()
                 .to_uppercase();
-
-            if first_author_letter != "\0" && (entry.first_author_letter != first_author_letter) {
+            if entry.first_author_letter != first_author_letter {
                 let mut stmt = tx
                         .prepare("UPDATE books_impl SET first_author_letter = :first_letter WHERE id = :book_id")
                         .unwrap();
diff --git a/src/epub.rs b/src/epub.rs
index a5916d4..759c91f 100644
--- a/src/epub.rs
+++ b/src/epub.rs
@@ -151,10 +151,6 @@ pub fn get_epub_metadata(filename: &str) -> Option<EpubMetadata> {
                                 .unwrap()
                                 .as_str();
                         xml_authors.insert(curr_id.clone(), XmlAut::new());
-                    } else {
-                        curr_id = "none".to_string() + xml_authors.len().to_string().as_str();
-                        let entry = xml_authors.entry(curr_id.clone()).or_insert(XmlAut::new());
-                        entry.role = "aut".to_string();
                     }
                 } else {
                     if let Some(file_as_val) = e
diff --git a/src/main.rs b/src/main.rs
index 7374124..79c1f8d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -25,12 +25,25 @@ fn main() {
 
     if cfg!(target_arch = "arm") {
         if stat.anything_fixed() == false {
-            pocketbook::dialog(
-                pocketbook::Icon::Info,
-                "The database seems to be ok.\n\
+            if stat.drm_skipped == 0 {
+                pocketbook::dialog(
+                    pocketbook::Icon::Info,
+                    "The database seems to be ok.\n\
                     Nothing had to be fixed.",
-                &["OK"],
-            );
+                    &["OK"],
+                );
+            } else {
+                pocketbook::dialog(
+                    pocketbook::Icon::Info,
+                    &format!(
+                        "The database seems to be ok.\n\
+                        Nothing had to be fixed.\n\
+                        (Books skipped (DRM): {})",
+                        &stat.drm_skipped
+                    ),
+                    &["OK"],
+                );
+            }
         } else {
             pocketbook::dialog(
                 pocketbook::Icon::Info,
@@ -39,11 +52,13 @@ fn main() {
                     Sorting fixed: {}\n\
                     Genres fixed:  {}\n\
                     Series fixed:  {}\n\
+                    Books skipped (DRM):   {}\n\
                     Books cleaned from DB: {}",
                     &stat.authors_fixed,
                     &stat.sorting_fixed,
                     &stat.genres_fixed,
                     &stat.series_fixed,
+                    &stat.drm_skipped,
                     &stat.ghost_books_cleaned
                 ),
                 &["OK"],
@@ -55,11 +70,13 @@ fn main() {
             Sorting fixed: {}\n\
             Genres fixed:  {}\n\
             Series fixed:  {}\n\
+            Books skipped (DRM):   {}\n\
             Books cleaned from DB: {}",
             &stat.authors_fixed,
             &stat.sorting_fixed,
             &stat.genres_fixed,
             &stat.series_fixed,
+            &stat.drm_skipped,
             &stat.ghost_books_cleaned
         );
     }