diff --git a/core/src/main/scala-3/spire/std/double.scala b/core/src/main/scala-3/spire/std/double.scala
index 1845bec4b..ec61f2ba1 100644
--- a/core/src/main/scala-3/spire/std/double.scala
+++ b/core/src/main/scala-3/spire/std/double.scala
@@ -31,9 +31,9 @@ trait DoubleIsField extends Field[Double] {
   override inline def times(a: Double, b: Double): Double = a * b
   inline def zero: Double = 0.0
 
-  override inline def fromInt(n: Int): Double = n.toDouble
+  override def fromInt(n: Int): Double = n
 
-  override inline def fromDouble(n: Double): Double = n
+  override def fromDouble(n: Double): Double = n
   inline def div(a: Double, b: Double): Double = a / b
 }
 
diff --git a/core/src/main/scala/spire/math/Numeric.scala b/core/src/main/scala/spire/math/Numeric.scala
index 297652ea3..7928aaad0 100644
--- a/core/src/main/scala/spire/math/Numeric.scala
+++ b/core/src/main/scala/spire/math/Numeric.scala
@@ -185,6 +185,8 @@ private[math] class DoubleIsNumeric
     with ConvertableToDouble
     with DoubleIsReal
     with Serializable {
+  override def fromInt(n: Int): Double = n
+  override def fromDouble(n: Double): Double = n
   override def fromBigInt(n: BigInt): Double = n.toDouble
   override def toDouble(n: Double): Double = n.toDouble
   override def toRational(n: Double): Rational = super[DoubleIsReal].toRational(n)