diff --git a/kmath-stat/src/commonMain/kotlin/space/kscience/kmath/series/VarianceRatioTest.kt b/kmath-stat/src/commonMain/kotlin/space/kscience/kmath/series/VarianceRatioTest.kt
index 3c6747ed2..6a2f5e426 100644
--- a/kmath-stat/src/commonMain/kotlin/space/kscience/kmath/series/VarianceRatioTest.kt
+++ b/kmath-stat/src/commonMain/kotlin/space/kscience/kmath/series/VarianceRatioTest.kt
@@ -7,8 +7,6 @@ package space.kscience.kmath.series
 
 import space.kscience.kmath.distributions.zSNormalCDF
 import space.kscience.kmath.operations.DoubleField.pow
-import space.kscience.kmath.operations.algebra
-import space.kscience.kmath.operations.bufferAlgebra
 import space.kscience.kmath.operations.fold
 import kotlin.math.absoluteValue