diff --git a/src/main/java/ninja/javafx/smartcsv/validation/Validator.java b/src/main/java/ninja/javafx/smartcsv/validation/Validator.java
index f462249..66182e9 100644
--- a/src/main/java/ninja/javafx/smartcsv/validation/Validator.java
+++ b/src/main/java/ninja/javafx/smartcsv/validation/Validator.java
@@ -151,7 +151,7 @@ public class Validator {
     private void checkBlankOrNull(Config columnConfig, String value, List<String> result) {
         if (getBoolean(columnConfig, "not empty")) {
             if (isBlankOrNull(value)) {
-                result.add("should not be empty");
+                result.add("validation.message.not.empty");
             }
         }
     }
@@ -159,7 +159,7 @@ public class Validator {
     private void checkInteger(Config columnConfig, String value, List<String> result) {
         if (getBoolean(columnConfig, "integer")) {
             if (!isInt(value)) {
-                result.add("should be an integer");
+                result.add("validation.message.integer");
             }
         }
     }
@@ -194,7 +194,7 @@ public class Validator {
     private void checkAlphaNumeric(Config columnConfig, String value, List<String> result) {
         if (getBoolean(columnConfig, "alphanumeric")) {
             if (!matchRegexp(value, "[0-9a-zA-Z]*")) {
-                result.add("should not be alphanumeric");
+                result.add("validation.message.alphanumeric");
             }
         }
     }
diff --git a/src/main/resources/ninja/javafx/smartcsv/fx/smartcsv.properties b/src/main/resources/ninja/javafx/smartcsv/fx/smartcsv.properties
index 3ae4dc6..2ee4e0c 100644
--- a/src/main/resources/ninja/javafx/smartcsv/fx/smartcsv.properties
+++ b/src/main/resources/ninja/javafx/smartcsv/fx/smartcsv.properties
@@ -7,4 +7,9 @@ menu.about = About
 menu.file = File
 menu.edit = Edit
 menu.help = Help
-title.validation.errors = Validation Errors:
\ No newline at end of file
+title.validation.errors = Validation Errors:
+
+# validaton messages
+validation.message.not.empty = should not be empty
+validation.message.integer = should be an integer
+validation.message.alphanumeric = should be alphanumeric
\ No newline at end of file
diff --git a/src/main/resources/ninja/javafx/smartcsv/fx/smartcsv_de.properties b/src/main/resources/ninja/javafx/smartcsv/fx/smartcsv_de.properties
index 889e48d..0da38ec 100644
--- a/src/main/resources/ninja/javafx/smartcsv/fx/smartcsv_de.properties
+++ b/src/main/resources/ninja/javafx/smartcsv/fx/smartcsv_de.properties
@@ -15,4 +15,9 @@ menu.about = \u00dcber ...
 menu.file = Datei
 menu.edit = Bearbeiten
 menu.help = Hilfe
-title.validation.errors = Fehler in der Datei:
\ No newline at end of file
+title.validation.errors = Fehler in der Datei:
+
+# validaton messages
+validation.message.not.empty = Darf nicht leer sein.
+validation.message.integer = Muss eine Zahl sein.
+validation.message.alphanumeric = Darf nur Zahlen und Buchstaben enthalten.
\ No newline at end of file
diff --git a/src/test/java/ninja/javafx/smartcsv/validation/ValidatorTest.java b/src/test/java/ninja/javafx/smartcsv/validation/ValidatorTest.java
index b8c537d..f7a14d0 100644
--- a/src/test/java/ninja/javafx/smartcsv/validation/ValidatorTest.java
+++ b/src/test/java/ninja/javafx/smartcsv/validation/ValidatorTest.java
@@ -85,10 +85,10 @@ public class ValidatorTest {
     public static Collection validationConfigurations() {
         return asList(new Object[][] {
                 { "column", "not empty", true, "column", "value", true, null },
-                { "column", "not empty", true, "column", "", false, "should not be empty" },
-                { "column", "not empty", true, "column", null, false, "should not be empty" },
+                { "column", "not empty", true, "column", "", false, "validation.message.not.empty" },
+                { "column", "not empty", true, "column", null, false, "validation.message.not.empty" },
                 { "column", "integer", true, "column", "999", true, null },
-                { "column", "integer", true, "column", "a", false, "should be an integer" },
+                { "column", "integer", true, "column", "a", false, "validation.message.integer" },
                 { "column", "minlength", 2, "column", "12", true, null },
                 { "column", "minlength", 2, "column", "1", false, "has not min length of 2" },
                 { "column", "maxlength", 2, "column", "12", true, null },
@@ -96,7 +96,7 @@ public class ValidatorTest {
                 { "column", "date", "yyyyMMdd", "column", "20151127", true, null },
                 { "column", "date", "yyyyMMdd", "column", "27.11.2015", false, "is not a date of format yyyyMMdd" },
                 { "column", "alphanumeric", true, "column", "abcABC123", true, null },
-                { "column", "alphanumeric", true, "column", "-abcABC123", false, "should not be alphanumeric" },
+                { "column", "alphanumeric", true, "column", "-abcABC123", false, "validation.message.alphanumeric" },
                 { "column", "regexp", "[a-z]*", "column", "abc", true, null },
                 { "column", "regexp", "[a-z]*", "column", "abcA", false, "does not match [a-z]*" },
                 { "column", "groovy", "value.contains('a')? 'true' : 'no a inside'", "column", "abcdef", true, null },