diff --git a/idea/src/org/jetbrains/kotlin/idea/imports/KotlinImportOptimizer.kt b/idea/src/org/jetbrains/kotlin/idea/imports/KotlinImportOptimizer.kt
index 66d24620637..312d5c75d2a 100644
--- a/idea/src/org/jetbrains/kotlin/idea/imports/KotlinImportOptimizer.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/imports/KotlinImportOptimizer.kt
@@ -22,8 +22,8 @@ import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiFile
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.idea.caches.project.ModuleSourceInfo
-import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.caches.project.getNullableModuleInfo
+import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
 import org.jetbrains.kotlin.idea.core.formatter.KotlinCodeStyleSettings
 import org.jetbrains.kotlin.idea.references.KtInvokeFunctionReference
@@ -183,7 +183,7 @@ class KotlinImportOptimizer : ImportOptimizer {
         }
 
         fun replaceImports(file: KtFile, imports: List<ImportPath>) {
-            val importList = file.importList!!
+            val importList = file.importList ?: return
             val oldImports = importList.imports
             val psiFactory = KtPsiFactory(file.project)
             for (importPath in imports) {