diff --git a/src/common/kiwix/library.cpp b/src/common/kiwix/library.cpp
index aea5df537..0e2a0b84a 100644
--- a/src/common/kiwix/library.cpp
+++ b/src/common/kiwix/library.cpp
@@ -92,7 +92,7 @@ namespace kiwix {
   }
 
   bool Library::removeBookByIndex(const unsigned int bookIndex) {
-    books.erase(books.begin()+bookIndex-1);
+    books.erase(books.begin()+bookIndex);
     return true;
   }
 
diff --git a/src/common/kiwix/manager.cpp b/src/common/kiwix/manager.cpp
index 1382c16c3..0e1899f13 100644
--- a/src/common/kiwix/manager.cpp
+++ b/src/common/kiwix/manager.cpp
@@ -248,8 +248,9 @@ namespace kiwix {
     unsigned int bookIndex = 0;
     std::vector<kiwix::Book>::iterator itr;
     for ( itr = library.books.begin(); itr != library.books.end(); ++itr ) {    
-      if ( itr->id == id) 
+      if ( itr->id == id) {
 	return this->library.removeBookByIndex(bookIndex);
+      }
       bookIndex++;
     }
     return false;