diff --git a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/intrinsics/Equals.kt b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/intrinsics/Equals.kt
index c94a8ca34f3..b8663aef106 100644
--- a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/intrinsics/Equals.kt
+++ b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/intrinsics/Equals.kt
@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.codegen.AsmUtil.isPrimitive
 import org.jetbrains.kotlin.codegen.StackValue
 import org.jetbrains.kotlin.codegen.intrinsics.IntrinsicMethods
 import org.jetbrains.kotlin.config.LanguageFeature
+import org.jetbrains.kotlin.ir.descriptors.toIrBasedKotlinType
 import org.jetbrains.kotlin.ir.expressions.IrExpression
 import org.jetbrains.kotlin.ir.expressions.IrFunctionAccessExpression
 import org.jetbrains.kotlin.ir.expressions.IrStatementOrigin
@@ -172,11 +173,11 @@ class Ieee754Equals(val operandType: Type) : IntrinsicMethod() {
         val arg0 = expression.getValueArgument(0)!!
         val arg1 = expression.getValueArgument(1)!!
 
-        val arg0Type = arg0.type.toKotlinType()
+        val arg0Type = arg0.type.toIrBasedKotlinType()
         if (!arg0Type.isPrimitiveNumberOrNullableType() && !arg0Type.upperBoundedByPrimitiveNumberOrNullableType())
             throw AssertionError("Should be primitive or nullable primitive type: $arg0Type")
 
-        val arg1Type = arg1.type.toKotlinType()
+        val arg1Type = arg1.type.toIrBasedKotlinType()
         if (!arg1Type.isPrimitiveNumberOrNullableType() && !arg1Type.upperBoundedByPrimitiveNumberOrNullableType())
             throw AssertionError("Should be primitive or nullable primitive type: $arg1Type")