diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/KotlinCacheService.kt b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/KotlinCacheService.kt
index 18459138d21..3c063f6712a 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/KotlinCacheService.kt
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/KotlinCacheService.kt
@@ -202,7 +202,12 @@ public class KotlinCacheService(val project: Project) {
             getCacheForSyntheticFiles(syntheticFiles)
         }
         else {
-            getGlobalCache(TargetPlatformDetector.getPlatform(files.first()))
+            val firstFile = files.firstOrNull()
+            val targetPlatform = if (firstFile != null)
+                TargetPlatformDetector.getPlatform(firstFile)
+            else
+                TargetPlatformDetector.getDefaultPlatform()
+            getGlobalCache(targetPlatform)
         }
     }
 
diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/TargetPlatformDetector.java b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/TargetPlatformDetector.java
index 9d64749e8d3..9d347425240 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/TargetPlatformDetector.java
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/project/TargetPlatformDetector.java
@@ -53,7 +53,7 @@ public class TargetPlatformDetector {
     }
 
     @NotNull
-    private static TargetPlatform getDefaultPlatform() {
+    public static TargetPlatform getDefaultPlatform() {
         LOG.info("Using default platform");
         return TargetPlatform.JVM;
     }