diff --git a/utoipa/src/openapi/example.rs b/utoipa/src/openapi/example.rs
index 2374196f..b233aa56 100644
--- a/utoipa/src/openapi/example.rs
+++ b/utoipa/src/openapi/example.rs
@@ -32,12 +32,12 @@ builder! {
     #[serde(rename_all = "camelCase")]
     pub struct Example {
         /// Short description for the [`Example`].
-        #[serde(skip_serializing_if = "String::is_empty")]
+        #[serde(skip_serializing_if = "String::is_empty", default)]
         pub summary: String,
 
         /// Long description for the [`Example`]. Value supports markdown syntax for rich text
         /// representation.
-        #[serde(skip_serializing_if = "String::is_empty")]
+        #[serde(skip_serializing_if = "String::is_empty", default)]
         pub description: String,
 
         /// Embedded literal example value. [`Example::value`] and [`Example::external_value`] are
@@ -48,7 +48,7 @@ builder! {
         /// An URI that points to a literal example value. [`Example::external_value`] provides the
         /// capability to references an example that cannot be easily included in JSON or YAML.
         /// [`Example::value`] and [`Example::external_value`] are mutually exclusive.
-        #[serde(skip_serializing_if = "String::is_empty")]
+        #[serde(skip_serializing_if = "String::is_empty", default)]
         pub external_value: String,
     }
 }