diff --git a/platform/script-debugger/backend/src/org/jetbrains/debugger/sourcemap/SourceMapDecoder.java b/platform/script-debugger/backend/src/org/jetbrains/debugger/sourcemap/SourceMapDecoder.java
index 431a1156ae89..c033a6979f09 100644
--- a/platform/script-debugger/backend/src/org/jetbrains/debugger/sourcemap/SourceMapDecoder.java
+++ b/platform/script-debugger/backend/src/org/jetbrains/debugger/sourcemap/SourceMapDecoder.java
@@ -135,6 +135,10 @@ public final class SourceMapDecoder {
     }
 
     List<String> sources = readSources(sourcesReader, sourceRoot);
+    if (sources.isEmpty()) {
+      // empty map, meteor can report such ugly maps
+      return null;
+    }
 
     @SuppressWarnings("unchecked")
     List<MappingEntry>[] reverseMappingsBySourceUrl = new List[sources.size()];