diff --git a/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/JSBuilder.kt b/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/JSBuilder.kt
index 7b3f02616..b6b58179b 100644
--- a/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/JSBuilder.kt
+++ b/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/JSBuilder.kt
@@ -50,7 +50,7 @@ internal class JSBuilder<T>(val bodyCallback: JSBuilder<T>.() -> BaseExpression)
             MemberExpression(
                 computed = true,
                 optional = false,
-                `object` = Identifier("constants"),я
+                `object` = Identifier("constants"),
                 property = SimpleLiteral(idx),
             )
         }