diff --git a/src/main/kotlin/com/cjbooms/fabrikt/generators/OasDefault.kt b/src/main/kotlin/com/cjbooms/fabrikt/generators/OasDefault.kt
index b94ad5c5..83dcb7dd 100644
--- a/src/main/kotlin/com/cjbooms/fabrikt/generators/OasDefault.kt
+++ b/src/main/kotlin/com/cjbooms/fabrikt/generators/OasDefault.kt
@@ -5,6 +5,7 @@ import com.cjbooms.fabrikt.util.NormalisedString.toEnumName
 import com.squareup.kotlinpoet.ClassName
 import com.squareup.kotlinpoet.CodeBlock
 import com.squareup.kotlinpoet.TypeName
+import java.math.BigDecimal
 import java.net.URI
 import java.util.Base64
 
@@ -17,7 +18,12 @@ sealed class OasDefault {
             CodeBlock.of("%S", strValue)
     }
 
-    data class NumericValue(val numericValue: Number) : OasDefault() {
+    data class BigDecimalValue(val decimalValue: Number) : OasDefault() {
+        override fun getDefault(): CodeBlock =
+            CodeBlock.of("%T($decimalValue)", BigDecimal::class)
+    }
+
+    data class NumberValue(val numericValue: Number) : OasDefault() {
         override fun getDefault(): CodeBlock =
             CodeBlock.of("%L", numericValue)
     }
@@ -69,7 +75,11 @@ sealed class OasDefault {
                     }
                 }
 
-                is Number -> OasDefault.NumericValue(default)
+                is Number ->
+                    when (typeInfo) {
+                        is KotlinTypeInfo.Numeric -> OasDefault.BigDecimalValue(default)
+                        else -> OasDefault.NumberValue(default)
+                    }
                 is Boolean -> OasDefault.BooleanValue(default)
                 else -> null
             }
diff --git a/src/test/resources/examples/defaultValues/api.yaml b/src/test/resources/examples/defaultValues/api.yaml
index aa9c3b15..bf0c8361 100644
--- a/src/test/resources/examples/defaultValues/api.yaml
+++ b/src/test/resources/examples/defaultValues/api.yaml
@@ -12,6 +12,9 @@ components:
         integer_default:
           type: integer
           default: 18
+        decimal_default:
+          type: number
+          default: 0.1
         enum_default:
           type: string
           enum:
diff --git a/src/test/resources/examples/defaultValues/models/PersonWithDefaults.kt b/src/test/resources/examples/defaultValues/models/PersonWithDefaults.kt
index 40b7bf22..e9150a90 100644
--- a/src/test/resources/examples/defaultValues/models/PersonWithDefaults.kt
+++ b/src/test/resources/examples/defaultValues/models/PersonWithDefaults.kt
@@ -1,6 +1,7 @@
 package examples.defaultValues.models
 
 import com.fasterxml.jackson.`annotation`.JsonProperty
+import java.math.BigDecimal
 import java.net.URI
 import java.util.Base64
 import javax.validation.constraints.NotNull
@@ -18,6 +19,10 @@ public data class PersonWithDefaults(
   @get:JsonProperty("integer_default")
   @get:NotNull
   public val integerDefault: Int = 18,
+  @param:JsonProperty("decimal_default")
+  @get:JsonProperty("decimal_default")
+  @get:NotNull
+  public val decimalDefault: BigDecimal = BigDecimal(0.1),
   @param:JsonProperty("enum_default")
   @get:JsonProperty("enum_default")
   @get:NotNull