diff --git a/src/main/java/net/openhft/chronicle/map/FileLockUtil.java b/src/main/java/net/openhft/chronicle/map/FileLockUtil.java
index 2c0b8cc7e..cdbd20c42 100644
--- a/src/main/java/net/openhft/chronicle/map/FileLockUtil.java
+++ b/src/main/java/net/openhft/chronicle/map/FileLockUtil.java
@@ -43,7 +43,7 @@ public final class FileLockUtil {
                                 flr.reserve();
                                 return flr; // keep the old one
                             }
-                        } catch (IOException e) {
+                        } catch (IOException | IllegalStateException e) {
                             throw newUnableToAcquireSharedFileLockException(canonicalFile, e);
                         }
                     }