diff --git a/src/main/java/cz/cvut/kbss/termit/service/IdentifierResolver.java b/src/main/java/cz/cvut/kbss/termit/service/IdentifierResolver.java
index 232f5b7ef..fda72edb0 100644
--- a/src/main/java/cz/cvut/kbss/termit/service/IdentifierResolver.java
+++ b/src/main/java/cz/cvut/kbss/termit/service/IdentifierResolver.java
@@ -19,6 +19,7 @@
 
 import cz.cvut.kbss.termit.exception.InvalidIdentifierException;
 import cz.cvut.kbss.termit.exception.TermItException;
+import cz.cvut.kbss.termit.util.Configuration;
 import org.springframework.stereotype.Service;
 
 import java.net.URI;
@@ -80,6 +81,12 @@ public class IdentifierResolver {
         Arrays.sort(ILLEGAL_FILENAME_CHARS);
     }
 
+    private final boolean asciiOnlyIdentifiers;
+
+    public IdentifierResolver(Configuration config) {
+        this.asciiOnlyIdentifiers = config.isAsciiIdentifiers();
+    }
+
     /**
      * Normalizes the specified value which includes:
      * <ul>
@@ -139,11 +146,12 @@ public URI generateIdentifier(String namespace, String... components) {
         if (!namespace.endsWith("/") && !namespace.endsWith("#")) {
             namespace += "/";
         }
+        final String localPart = asciiOnlyIdentifiers ? normalizeToAscii(comps) : normalize(comps);
         try {
-            return URI.create(namespace + normalize(comps));
+            return URI.create(namespace + localPart);
         } catch (IllegalArgumentException e) {
             throw new InvalidIdentifierException(
-                    "Generated identifier " + namespace + normalize(comps) + " is not a valid URI.",
+                    "Generated identifier " + namespace + localPart + " is not a valid URI.",
                     "error.identifier.invalidCharacters");
         }
     }
diff --git a/src/test/java/cz/cvut/kbss/termit/rest/UserGroupControllerTest.java b/src/test/java/cz/cvut/kbss/termit/rest/UserGroupControllerTest.java
index 50179f2c1..7c8b8d644 100644
--- a/src/test/java/cz/cvut/kbss/termit/rest/UserGroupControllerTest.java
+++ b/src/test/java/cz/cvut/kbss/termit/rest/UserGroupControllerTest.java
@@ -22,6 +22,7 @@
 import cz.cvut.kbss.termit.model.UserGroup;
 import cz.cvut.kbss.termit.service.IdentifierResolver;
 import cz.cvut.kbss.termit.service.business.UserGroupService;
+import cz.cvut.kbss.termit.util.Configuration;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -56,7 +57,7 @@ class UserGroupControllerTest extends BaseControllerTestRunner {
     private UserGroupService groupService;
 
     @Spy
-    private IdentifierResolver identifierResolver = new IdentifierResolver();
+    private IdentifierResolver identifierResolver = new IdentifierResolver(new Configuration());
 
     @InjectMocks
     private UserGroupController sut;
diff --git a/src/test/java/cz/cvut/kbss/termit/service/IdentifierResolverTest.java b/src/test/java/cz/cvut/kbss/termit/service/IdentifierResolverTest.java
index 0ba3136a4..7b2fee669 100644
--- a/src/test/java/cz/cvut/kbss/termit/service/IdentifierResolverTest.java
+++ b/src/test/java/cz/cvut/kbss/termit/service/IdentifierResolverTest.java
@@ -20,6 +20,7 @@
 import cz.cvut.kbss.termit.environment.Environment;
 import cz.cvut.kbss.termit.environment.Generator;
 import cz.cvut.kbss.termit.exception.InvalidIdentifierException;
+import cz.cvut.kbss.termit.util.Configuration;
 import cz.cvut.kbss.termit.util.Vocabulary;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -42,7 +43,7 @@ class IdentifierResolverTest {
 
     @BeforeEach
     void setUp() {
-        this.sut = new IdentifierResolver();
+        this.sut = new IdentifierResolver(new Configuration());
     }
 
     @Test
@@ -335,4 +336,15 @@ void generateIdentifierThrowsInvalidIdentifierExceptionWhenComponentsContainsUnf
         final String label = "label with emoji \u3000"; // Ideographic space
         assertThrows(InvalidIdentifierException.class, () -> sut.generateIdentifier(namespace, label));
     }
+
+    @Test
+    void generateIdentifierNormalizesAccentedCharactersToAsciiWhenAsciiIdentifiersAreConfigured() {
+        final Configuration asciiOnlyConfig = new Configuration();
+        asciiOnlyConfig.setAsciiIdentifiers(true);
+        this.sut = new IdentifierResolver(asciiOnlyConfig);
+        final String namespace = "http://onto.fel.cvut.cz/ontologies/termit/test-slovnik";
+        final String label = "Délka dostřiku [m]";
+        final URI result = sut.generateIdentifier(namespace, label);
+        assertEquals(URI.create(namespace + "/delka-dostriku-m"), result);
+    }
 }
diff --git a/src/test/java/cz/cvut/kbss/termit/service/importer/excel/ExcelImporterTest.java b/src/test/java/cz/cvut/kbss/termit/service/importer/excel/ExcelImporterTest.java
index 3254d2246..5804ca6e8 100644
--- a/src/test/java/cz/cvut/kbss/termit/service/importer/excel/ExcelImporterTest.java
+++ b/src/test/java/cz/cvut/kbss/termit/service/importer/excel/ExcelImporterTest.java
@@ -86,7 +86,7 @@ class ExcelImporterTest {
 
     @SuppressWarnings("unused")
     @Spy
-    private IdentifierResolver idResolver = new IdentifierResolver();
+    private IdentifierResolver idResolver = new IdentifierResolver(new Configuration());
 
     @InjectMocks
     private ExcelImporter sut;
diff --git a/src/test/java/cz/cvut/kbss/termit/service/repository/ResourceRepositoryServiceTest.java b/src/test/java/cz/cvut/kbss/termit/service/repository/ResourceRepositoryServiceTest.java
index df9fae710..6d43ec226 100644
--- a/src/test/java/cz/cvut/kbss/termit/service/repository/ResourceRepositoryServiceTest.java
+++ b/src/test/java/cz/cvut/kbss/termit/service/repository/ResourceRepositoryServiceTest.java
@@ -62,7 +62,7 @@ class ResourceRepositoryServiceTest {
     private TermOccurrenceDao occurrenceDao;
 
     @Spy
-    private IdentifierResolver idResolver = new IdentifierResolver();
+    private IdentifierResolver idResolver = new IdentifierResolver(new Configuration());
 
     @Spy
     private Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
diff --git a/src/test/java/cz/cvut/kbss/termit/service/repository/UserRepositoryServiceTest.java b/src/test/java/cz/cvut/kbss/termit/service/repository/UserRepositoryServiceTest.java
index aef217484..6b7126ad9 100644
--- a/src/test/java/cz/cvut/kbss/termit/service/repository/UserRepositoryServiceTest.java
+++ b/src/test/java/cz/cvut/kbss/termit/service/repository/UserRepositoryServiceTest.java
@@ -62,10 +62,10 @@ class UserRepositoryServiceTest {
     private UserAccountDao userAccountDao;
 
     @Spy
-    private IdentifierResolver identifierResolver;
+    private Configuration configuration = new Configuration();
 
     @Spy
-    private Configuration configuration = new Configuration();
+    private IdentifierResolver identifierResolver = new IdentifierResolver(configuration);
 
     @Spy
     private Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
diff --git a/src/test/java/cz/cvut/kbss/termit/service/security/SecurityUtilsTest.java b/src/test/java/cz/cvut/kbss/termit/service/security/SecurityUtilsTest.java
index 8292ec797..62e3886ca 100644
--- a/src/test/java/cz/cvut/kbss/termit/service/security/SecurityUtilsTest.java
+++ b/src/test/java/cz/cvut/kbss/termit/service/security/SecurityUtilsTest.java
@@ -69,10 +69,10 @@ class SecurityUtilsTest {
     private PasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
 
     @Spy
-    private IdentifierResolver idResolver = new IdentifierResolver();
+    private Configuration config = new Configuration();
 
     @Spy
-    private Configuration config = new Configuration();
+    private IdentifierResolver idResolver = new IdentifierResolver(config);
 
     @InjectMocks
     private SecurityUtils sut;