diff --git a/platform/util/src/com/intellij/util/io/MappedBufferWrapper.java b/platform/util/src/com/intellij/util/io/MappedBufferWrapper.java
index 7984e22818d8..09ccb39ba82c 100644
--- a/platform/util/src/com/intellij/util/io/MappedBufferWrapper.java
+++ b/platform/util/src/com/intellij/util/io/MappedBufferWrapper.java
@@ -108,6 +108,7 @@ public abstract class MappedBufferWrapper {
         return true;
       }
       catch (Throwable e) {
+        LOG.info(e);
         try {
           Thread.sleep(10);
         }