diff --git a/src/main/java/alfio/util/ItalianTaxIdValidator.java b/src/main/java/alfio/util/ItalianTaxIdValidator.java
index 0ec4b2b639..b7d138d5eb 100644
--- a/src/main/java/alfio/util/ItalianTaxIdValidator.java
+++ b/src/main/java/alfio/util/ItalianTaxIdValidator.java
@@ -20,10 +20,7 @@
 import lombok.experimental.UtilityClass;
 import org.apache.commons.lang3.StringUtils;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
+import java.util.*;
 
 import static java.util.Map.entry;
 import static org.apache.commons.lang3.StringUtils.*;
@@ -112,7 +109,7 @@ public static boolean fiscalCodeMatchesWithName(String firstName, String lastNam
                 consonantsList.addAll(firstNameParts.consonants.subList(2, firstNameParts.consonants.size()));
                 appendLastNameCode(code, new FiscalCodeParts(consonantsList, firstNameParts.vowels));
             }
-            return fiscalCode.toUpperCase().startsWith(code.toString());
+            return fiscalCode.toUpperCase(Locale.ITALIAN).startsWith(code.toString());
         }
         return false;
     }
@@ -128,7 +125,7 @@ private static void appendLastNameCode(StringBuilder code, FiscalCodeParts lastN
     }
 
     private static FiscalCodeParts parseFiscalCodePart(String part) {
-        var chars = part.toUpperCase().toCharArray();
+        var chars = StringUtils.stripAccents(part.toUpperCase(Locale.ITALIAN)).toCharArray();
         var consonants = new ArrayList<Character>();
         var vowels = new ArrayList<Character>();
         for (char c : chars) {
diff --git a/src/test/java/alfio/util/ItalianTaxIdValidatorTest.java b/src/test/java/alfio/util/ItalianTaxIdValidatorTest.java
index a233f270e0..0c5e7e9418 100644
--- a/src/test/java/alfio/util/ItalianTaxIdValidatorTest.java
+++ b/src/test/java/alfio/util/ItalianTaxIdValidatorTest.java
@@ -69,6 +69,7 @@ void personalCodeValidationFailure(String number) {
     void validateNamePart() {
         assertTrue(fiscalCodeMatchesWithName("Homer", "Simpson", "SMPHMR66A01B602I"));
         assertTrue(fiscalCodeMatchesWithName("Lisa", "Simpson", "SMPLSI96L50C770S"));
+        assertTrue(fiscalCodeMatchesWithName("Lisà", "Sìmpsön", "SMPLSI96L50C770S"));
         assertTrue(fiscalCodeMatchesWithName("Lisa Mary", "Simpson", "SMPLMR96S50F205L"));
         assertTrue(fiscalCodeMatchesWithName("Gi", "Ma", "MAXGIX80E02F205R"));
         assertTrue(fiscalCodeMatchesWithName("First", "Last", "63828920585"));