diff --git a/kmath-ast/src/jsMain/kotlin/kscience/kmath/wasm/internal/WasmBuilder.kt b/kmath-ast/src/jsMain/kotlin/kscience/kmath/wasm/internal/WasmBuilder.kt
index b5aa1a66e..7d7ee4be1 100644
--- a/kmath-ast/src/jsMain/kotlin/kscience/kmath/wasm/internal/WasmBuilder.kt
+++ b/kmath-ast/src/jsMain/kotlin/kscience/kmath/wasm/internal/WasmBuilder.kt
@@ -2,6 +2,7 @@ package kscience.kmath.wasm.internal
 
 import WebAssembly.Instance
 import binaryen.*
+import kscience.kmath.ast.MST
 import kscience.kmath.expressions.Expression
 import kscience.kmath.expressions.StringSymbol
 import kscience.kmath.operations.*