diff --git a/components/ui/ModalCreation.vue b/components/ui/ModalCreation.vue
index c92e84397..e02d3a2ea 100644
--- a/components/ui/ModalCreation.vue
+++ b/components/ui/ModalCreation.vue
@@ -115,6 +115,26 @@ export default {
     getProjectType() {
       return this.$tag.projectTypes.find((x) => this.projectType === x.display)
     },
+    getClientSide() {
+      switch (this.getProjectType().id) {
+        case 'plugin':
+          return 'unsupported'
+        case 'resourcepack':
+          return 'required'
+        default:
+          return 'unknown'
+      }
+    },
+    getServerSide() {
+      switch (this.getProjectType().id) {
+        case 'plugin':
+          return 'required'
+        case 'resourcepack':
+          return 'unsupported'
+        default:
+          return 'unknown'
+      }
+    },
     async createProject() {
       this.$nuxt.$loading.start()
 
@@ -159,8 +179,8 @@ Questions? [Join the Modrinth Discord for support!](https://discord.gg/EUHuJHt)`
             },
           ],
           categories: [],
-          client_side: 'unknown',
-          server_side: 'unknown',
+          client_side: this.getClientSide(),
+          server_side: this.getServerSide(),
           license_id: this.$tag.licenses.map((it) => it.short).includes('arr')
             ? 'arr'
             : this.$tag.licenses[0].short,
diff --git a/pages/_type/_id.vue b/pages/_type/_id.vue
index 43f6f35a3..7e8ee329d 100644
--- a/pages/_type/_id.vue
+++ b/pages/_type/_id.vue
@@ -267,6 +267,14 @@
                 Your project must have at least one version to submit for
                 review.
               </li>
+              <li
+                v-if="
+                  project.client_side === 'unknown' ||
+                  project.server_side === 'unknown'
+                "
+              >
+                Your project must have the supported environments selected.
+              </li>
             </ul>
           </div>
         </div>
@@ -1155,7 +1163,12 @@ export default {
       this.$nuxt.$loading.finish()
     },
     async submitForReview() {
-      if (this.project.body === '' || this.project.versions.length < 1) {
+      if (
+        this.project.body === '' ||
+        this.project.versions.length < 1 ||
+        this.project.client_side === 'unknown' ||
+        this.project.server_side === 'unknown'
+      ) {
         this.showKnownErrors = true
       } else {
         this.$nuxt.$loading.start()