diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4b8c06cf..ec993fb36 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## [Unreleased]
 ### Added
+- Autodiff for generic algebra elements in core!
 
 ### Changed
 - Kotlin 1.7
diff --git a/kmath-core/src/commonTest/kotlin/space/kscience/kmath/expressions/DerivativeStructureExpressionTest.kt b/kmath-core/src/commonTest/kotlin/space/kscience/kmath/expressions/DSTest.kt
similarity index 98%
rename from kmath-core/src/commonTest/kotlin/space/kscience/kmath/expressions/DerivativeStructureExpressionTest.kt
rename to kmath-core/src/commonTest/kotlin/space/kscience/kmath/expressions/DSTest.kt
index e5bc9805a..727a918ec 100644
--- a/kmath-core/src/commonTest/kotlin/space/kscience/kmath/expressions/DerivativeStructureExpressionTest.kt
+++ b/kmath-core/src/commonTest/kotlin/space/kscience/kmath/expressions/DSTest.kt
@@ -25,7 +25,7 @@ internal inline fun diff(
     DSField(DoubleField, ::DoubleBuffer, order, mapOf(*parameters)).block()
 }
 
-internal class AutoDiffTest {
+internal class DSTest {
     private val x by symbol
     private val y by symbol