diff --git a/src/PKPass.ts b/src/PKPass.ts
index 891e5c5..abfec4e 100644
--- a/src/PKPass.ts
+++ b/src/PKPass.ts
@@ -3,10 +3,9 @@ import { default as Bundle, filesSymbol } from "./Bundle";
 import { getModelFolderContents } from "./parser";
 import * as Schemas from "./schemas";
 import { Stream } from "stream";
-import { processDate } from "./processDate";
 import * as Signature from "./Signature";
 import * as Strings from "./StringsUtils";
-import { isValidRGB } from "./utils";
+import { isValidRGB, processDate } from "./utils";
 
 /** Exporting for tests specs */
 export const propsSymbol = Symbol("props");
diff --git a/src/processDate.ts b/src/processDate.ts
deleted file mode 100644
index 6000436..0000000
--- a/src/processDate.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { dateToW3CString } from "./utils";
-import formatMessage, { ERROR, DEBUG } from "./messages";
-
-export function processDate(key: string, date: Date): string | null {
-	if (!(date instanceof Date)) {
-		return null;
-	}
-
-	const dateParse = dateToW3CString(date);
-
-	if (!dateParse) {
-		console.warn(formatMessage(DEBUG.DATE_FORMAT_UNMATCH, key));
-		return null;
-	}
-
-	return dateParse;
-}
diff --git a/src/utils.ts b/src/utils.ts
index cb1a1bc..38406eb 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -26,6 +26,21 @@ export function isValidRGB(value?: string): boolean {
 	return rgb.slice(1, 4).every((v) => Math.abs(Number(v)) <= 255);
 }
 
+export function processDate(key: string, date: Date): string | null {
+	if (!(date instanceof Date)) {
+		return null;
+	}
+
+	const dateParse = dateToW3CString(date);
+
+	if (!dateParse) {
+		console.warn(formatMessage(DEBUG.DATE_FORMAT_UNMATCH, key));
+		return null;
+	}
+
+	return dateParse;
+}
+
 /**
  * Converts a date to W3C Standard format
  *
@@ -35,7 +50,7 @@ export function isValidRGB(value?: string): boolean {
  * 	 undefined otherwise
  */
 
-export function dateToW3CString(date: Date) {
+function dateToW3CString(date: Date) {
 	if (!(date instanceof Date)) {
 		return "";
 	}