diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/ResolveUtils.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/ResolveUtils.kt
index 7742a4ff2d9..92a12f3fca5 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/ResolveUtils.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/ResolveUtils.kt
@@ -32,7 +32,6 @@ import org.jetbrains.kotlin.fir.scopes.impl.withReplacedConeType
 import org.jetbrains.kotlin.fir.symbols.*
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
-import org.jetbrains.kotlin.fir.types.builder.FirResolvedTypeRefBuilder
 import org.jetbrains.kotlin.fir.types.builder.buildErrorTypeRef
 import org.jetbrains.kotlin.fir.types.builder.buildResolvedTypeRef
 import org.jetbrains.kotlin.fir.types.impl.ConeClassLikeTypeImpl
@@ -223,8 +222,8 @@ fun createFunctionalType(
     parameters: List<ConeKotlinType>,
     receiverType: ConeKotlinType?,
     rawReturnType: ConeKotlinType,
-    isKFunctionType: Boolean = false,
-    isSuspend: Boolean = false
+    isSuspend: Boolean,
+    isKFunctionType: Boolean = false
 ): ConeLookupTagBasedType {
     val receiverAndParameterTypes = listOfNotNull(receiverType) + parameters + listOf(rawReturnType)
 
diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/SamResolution.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/SamResolution.kt
index 051418db376..e46f2cd5556 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/SamResolution.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/SamResolution.kt
@@ -355,5 +355,6 @@ private fun FirSimpleFunction.getFunctionTypeForAbstractMethod(): ConeLookupTagB
     return createFunctionalType(
         parameterTypes, receiverType = null,
         rawReturnType = returnTypeRef.coneTypeSafe() ?: ConeKotlinErrorType("No type for return type of $this"),
+        isSuspend = this.isSuspend
     )
 }