diff --git a/src/aggregation/metric/average.rs b/src/aggregation/metric/average.rs
index ed13c53fba..966ea10051 100644
--- a/src/aggregation/metric/average.rs
+++ b/src/aggregation/metric/average.rs
@@ -24,7 +24,7 @@ pub struct AverageAggregation {
     /// By default they will be ignored but it is also possible to treat them as if they had a
     /// value. Examples in JSON format:
     /// { "field": "my_numbers", "missing": "10.0" }
-    #[serde(skip_serializing_if = "Option::is_none", default)]
+    #[serde(default)]
     pub missing: Option<f64>,
 }
 
diff --git a/src/aggregation/metric/count.rs b/src/aggregation/metric/count.rs
index ca685d6670..bb298de8b7 100644
--- a/src/aggregation/metric/count.rs
+++ b/src/aggregation/metric/count.rs
@@ -24,7 +24,7 @@ pub struct CountAggregation {
     /// By default they will be ignored but it is also possible to treat them as if they had a
     /// value. Examples in JSON format:
     /// { "field": "my_numbers", "missing": "10.0" }
-    #[serde(skip_serializing_if = "Option::is_none", default)]
+    #[serde(default)]
     pub missing: Option<f64>,
 }
 
diff --git a/src/aggregation/metric/max.rs b/src/aggregation/metric/max.rs
index 674972f519..ec8a6c6088 100644
--- a/src/aggregation/metric/max.rs
+++ b/src/aggregation/metric/max.rs
@@ -24,7 +24,7 @@ pub struct MaxAggregation {
     /// By default they will be ignored but it is also possible to treat them as if they had a
     /// value. Examples in JSON format:
     /// { "field": "my_numbers", "missing": "10.0" }
-    #[serde(skip_serializing_if = "Option::is_none", default)]
+    #[serde(default)]
     pub missing: Option<f64>,
 }
 
diff --git a/src/aggregation/metric/min.rs b/src/aggregation/metric/min.rs
index 562e865d38..a1c4066df5 100644
--- a/src/aggregation/metric/min.rs
+++ b/src/aggregation/metric/min.rs
@@ -24,7 +24,7 @@ pub struct MinAggregation {
     /// By default they will be ignored but it is also possible to treat them as if they had a
     /// value. Examples in JSON format:
     /// { "field": "my_numbers", "missing": "10.0" }
-    #[serde(skip_serializing_if = "Option::is_none", default)]
+    #[serde(default)]
     pub missing: Option<f64>,
 }
 
diff --git a/src/aggregation/metric/stats.rs b/src/aggregation/metric/stats.rs
index 0432cd8e19..ac4aa5b728 100644
--- a/src/aggregation/metric/stats.rs
+++ b/src/aggregation/metric/stats.rs
@@ -33,7 +33,7 @@ pub struct StatsAggregation {
     /// By default they will be ignored but it is also possible to treat them as if they had a
     /// value. Examples in JSON format:
     /// { "field": "my_numbers", "missing": "10.0" }
-    #[serde(skip_serializing_if = "Option::is_none", default)]
+    #[serde(default)]
     pub missing: Option<f64>,
 }
 
diff --git a/src/aggregation/metric/sum.rs b/src/aggregation/metric/sum.rs
index f63c144be8..067350a17c 100644
--- a/src/aggregation/metric/sum.rs
+++ b/src/aggregation/metric/sum.rs
@@ -24,7 +24,7 @@ pub struct SumAggregation {
     /// By default they will be ignored but it is also possible to treat them as if they had a
     /// value. Examples in JSON format:
     /// { "field": "my_numbers", "missing": "10.0" }
-    #[serde(skip_serializing_if = "Option::is_none", default)]
+    #[serde(default)]
     pub missing: Option<f64>,
 }