diff --git a/packages/nx-gradle/src/generators/application/schema.json b/packages/nx-gradle/src/generators/application/schema.json
index 5c9260724..3fbd6f9fc 100644
--- a/packages/nx-gradle/src/generators/application/schema.json
+++ b/packages/nx-gradle/src/generators/application/schema.json
@@ -68,6 +68,10 @@
     "packaging": {
       "description": "Packaging of the project",
       "type": "string",
+      "enum": [
+        "jar",
+        "war"
+      ],
       "default": "jar"
     },
     "framework": {
diff --git a/packages/nx-maven/src/generators/application/schema.json b/packages/nx-maven/src/generators/application/schema.json
index 06b8a0a0a..acc8aff35 100644
--- a/packages/nx-maven/src/generators/application/schema.json
+++ b/packages/nx-maven/src/generators/application/schema.json
@@ -68,6 +68,10 @@
     "packaging": {
       "description": "Packaging of the project",
       "type": "string",
+      "enum": [
+        "jar",
+        "war"
+      ],
       "default": "jar"
     },
     "framework": {