diff --git a/modules/openapi-generator/src/main/resources/rust/model.mustache b/modules/openapi-generator/src/main/resources/rust/model.mustache
index c4ed5beb64d..1bd2b8db9e0 100644
--- a/modules/openapi-generator/src/main/resources/rust/model.mustache
+++ b/modules/openapi-generator/src/main/resources/rust/model.mustache
@@ -28,6 +28,14 @@ impl ToString for {{{classname}}} {
         }
     }
 }
+
+impl Default for {{{classname}}} {
+    fn default() -> {{{classname}}} {
+        {{#allowableValues}}
+        Self::{{ enumVars.0.name }}
+        {{/allowableValues}}
+    }
+}
 {{/isEnum}}
 
 {{!-- for schemas that have a discriminator --}}
@@ -95,6 +103,14 @@ pub enum {{{enumName}}} {
 {{/enumVars}}
 {{/allowableValues}}
 }
+
+impl Default for {{{enumName}}} {
+    fn default() -> {{{enumName}}} {
+        {{#allowableValues}}
+        Self::{{ enumVars.0.name }}
+        {{/allowableValues}}
+    }
+}
 {{/isEnum}}
 {{/vars}}