diff --git a/kmath-ast/build.gradle.kts b/kmath-ast/build.gradle.kts
index 1f4a87b12..574793124 100644
--- a/kmath-ast/build.gradle.kts
+++ b/kmath-ast/build.gradle.kts
@@ -1,3 +1,5 @@
+import ru.mipt.npm.gradle.Maturity
+
 plugins {
     id("ru.mipt.npm.mpp")
 }
@@ -38,6 +40,6 @@ kotlin.sourceSets {
     }
 }
 
-readme{
-    maturity = ru.mipt.npm.gradle.Maturity.PROTOTYPE
-}
\ No newline at end of file
+readme {
+    maturity = Maturity.PROTOTYPE
+}
diff --git a/kmath-ast/src/jvmMain/kotlin/kscience/kmath/asm/internal/AsmBuilder.kt b/kmath-ast/src/jvmMain/kotlin/kscience/kmath/asm/internal/AsmBuilder.kt
index af7dc61b9..1edbed28d 100644
--- a/kmath-ast/src/jvmMain/kotlin/kscience/kmath/asm/internal/AsmBuilder.kt
+++ b/kmath-ast/src/jvmMain/kotlin/kscience/kmath/asm/internal/AsmBuilder.kt
@@ -2,9 +2,7 @@ package kscience.kmath.asm.internal
 
 import kscience.kmath.asm.internal.AsmBuilder.ClassLoader
 import kscience.kmath.ast.MST
-import kscience.kmath.ast.mstInField
 import kscience.kmath.expressions.Expression
-import kscience.kmath.operations.RealField
 import org.objectweb.asm.*
 import org.objectweb.asm.Opcodes.*
 import org.objectweb.asm.Type.*