diff --git a/src/process/validation/rules/validateUnique.ts b/src/process/validation/rules/validateUnique.ts
index 7cfe2b4f..7017b3c2 100644
--- a/src/process/validation/rules/validateUnique.ts
+++ b/src/process/validation/rules/validateUnique.ts
@@ -25,6 +25,12 @@ export const validateUnique: RuleFn = async (context: ValidationContext) => {
     if (!config || !config.database) {
         throw new ProcessorError("Can't test for unique value without a database config object", context, 'validate:validateUnique');
     }
+
+    // Showing custom unique error message if it is set
+    if (context?.component?.unique && context?.component?.errors?.unique) {
+        context.component.validate = {customMessage: context.component.errors!.unique};
+    }
+
     try {
         const isUnique = await config.database?.isUnique(context, value);
         if (typeof isUnique === 'string') {
diff --git a/src/process/validation/util.ts b/src/process/validation/util.ts
index 78e665e4..fb6639fb 100644
--- a/src/process/validation/util.ts
+++ b/src/process/validation/util.ts
@@ -50,9 +50,6 @@ export function isObject(obj: any): obj is Object {
     return typeof obj != null && (typeof obj === 'object' || typeof obj === 'function');
 }
 
-const getCustomErrorMessage = ({ errorKeyOrMessage, context }: FieldError): string =>
-    context.component?.errors?.[errorKeyOrMessage] || '';
-
 /**
  * Interpolates @formio/core errors so that they are compatible with the renderer
  * @param {FieldError[]} errors
@@ -63,7 +60,7 @@ export const interpolateErrors = (errors: FieldError[], lang: string = 'en') =>
     return errors.map((error) => {
         const { errorKeyOrMessage, context } = error;
         const i18n = VALIDATION_ERRORS[lang] || {};
-        const toInterpolate = getCustomErrorMessage(error) || i18n[errorKeyOrMessage] || errorKeyOrMessage;
+        const toInterpolate =  i18n[errorKeyOrMessage] || errorKeyOrMessage;
         const paths: any = [];
         context.path.split('.').forEach((part) => {
             const match = part.match(/\[([0-9]+)\]$/);