diff --git a/src/bin/keycloakify/BuildOptions.ts b/src/bin/keycloakify/BuildOptions.ts
index a8dfd694..0858f973 100644
--- a/src/bin/keycloakify/BuildOptions.ts
+++ b/src/bin/keycloakify/BuildOptions.ts
@@ -19,7 +19,7 @@ export namespace BuildOptions {
         extraThemeNames: string[];
         extraLoginPages: string[] | undefined;
         extraAccountPages: string[] | undefined;
-        extraThemeProperties?: string[];
+        extraThemeProperties: string[] | undefined;
         groupId: string;
         artifactId: string;
         bundler: Bundler;
diff --git a/src/bin/keycloakify/generateJavaStackFiles.ts b/src/bin/keycloakify/generateJavaStackFiles.ts
index ffca7be3..5808d0a1 100644
--- a/src/bin/keycloakify/generateJavaStackFiles.ts
+++ b/src/bin/keycloakify/generateJavaStackFiles.ts
@@ -9,7 +9,7 @@ export type BuildOptionsLike = {
     themeName: string;
     extraThemeNames: string[];
     groupId: string;
-    artifactId?: string;
+    artifactId: string;
     themeVersion: string;
 };
 
diff --git a/src/bin/keycloakify/generateTheme/generateTheme.ts b/src/bin/keycloakify/generateTheme/generateTheme.ts
index 16e84a4b..9e6df82c 100644
--- a/src/bin/keycloakify/generateTheme/generateTheme.ts
+++ b/src/bin/keycloakify/generateTheme/generateTheme.ts
@@ -16,9 +16,9 @@ export type BuildOptionsLike = BuildOptionsLike.Standalone | BuildOptionsLike.Ex
 export namespace BuildOptionsLike {
     export type Common = {
         themeName: string;
-        extraLoginPages?: string[];
-        extraAccountPages?: string[];
-        extraThemeProperties?: string[];
+        extraLoginPages: string[] | undefined;
+        extraAccountPages: string[] | undefined;
+        extraThemeProperties: string[] | undefined;
         isSilent: boolean;
         themeVersion: string;
         keycloakVersionDefaultAssets: string;