diff --git a/src/core/csvreader.cpp b/src/core/csvreader.cpp
index 18a0a04..830b25a 100644
--- a/src/core/csvreader.cpp
+++ b/src/core/csvreader.cpp
@@ -39,11 +39,6 @@ std::size_t CsvReader::readSellersFromFile(const fs::path &filePath, Marketplace
             continue;
         }
 
-        if (row[2].get<std::string>().empty() && row[3].get<std::string>().empty()) {
-            ++rowCount;
-            continue;
-        }
-
         auto seller = std::make_unique<Seller>();
         seller->setSellerNo(row[0].get<int>());
         if (row[1].is_int()) {
@@ -51,10 +46,19 @@ std::size_t CsvReader::readSellersFromFile(const fs::path &filePath, Marketplace
         } else {
             seller->setNumArticlesOffered(0);
         }
-        std::string firstName = row[2].get<std::string>();
-        seller->setFirstName(trim(firstName));
-        std::string lastName = row[3].get<std::string>();
-        seller->setLastName(trim(lastName));
+
+        // If both, first name and last name, are empty, use N. N.
+        // Else, use the real values.
+        if (row[2].get<std::string>().empty() && row[3].get<std::string>().empty()) {
+            seller->setFirstName("N.");
+            seller->setLastName("N.");
+        } else {
+            std::string firstName = row[2].get<std::string>();
+            seller->setFirstName(trim(firstName));
+            std::string lastName = row[3].get<std::string>();
+            seller->setLastName(trim(lastName));
+        }
+
         market->getSellers().push_back(std::move(seller));
         rowCount++;
     }
diff --git a/src/core/excelreader.cpp b/src/core/excelreader.cpp
index 82440ca..34e10c8 100644
--- a/src/core/excelreader.cpp
+++ b/src/core/excelreader.cpp
@@ -28,17 +28,22 @@ std::size_t ExcelReader::readSellersFromFile(const fs::path &filePath, Marketpla
             continue;
         }
 
-        // Skip the row if the seller has neither a first name nor a surname
-        if (row[2].value<std::string>().empty() && row[3].value<std::string>().empty()) {
-            continue;
-        }
         auto seller = std::make_unique<Seller>();
         seller->setSellerNo(row[0].value<int>());
         seller->setNumArticlesOffered(row[1].value<int>());
-        std::string firstName = row[2].value<std::string>();
-        seller->setFirstName(trim(firstName));
-        std::string lastName = row[3].value<std::string>();
-        seller->setLastName(trim(lastName));
+
+        // If both, first name and last name, are empty, use N. N.
+        // Else, use the real values.
+        if (row[2].value<std::string>().empty() && row[3].value<std::string>().empty()) {
+            seller->setFirstName("N.");
+            seller->setLastName("N.");
+        } else {
+            std::string firstName = row[2].value<std::string>();
+            seller->setFirstName(trim(firstName));
+            std::string lastName = row[3].value<std::string>();
+            seller->setLastName(trim(lastName));
+        }
+
         market->getSellers().push_back(std::move(seller));
     }