diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewersbyblame/ChangeUpdatedListener.java b/src/main/java/com/googlesource/gerrit/plugins/reviewersbyblame/ChangeUpdatedListener.java
index d21d5c3..e395747 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/reviewersbyblame/ChangeUpdatedListener.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewersbyblame/ChangeUpdatedListener.java
@@ -36,8 +36,6 @@
 import com.google.inject.Provider;
 import com.google.inject.ProvisionException;
 
-import org.eclipse.jgit.errors.IncorrectObjectTypeException;
-import org.eclipse.jgit.errors.MissingObjectException;
 import org.eclipse.jgit.errors.RepositoryNotFoundException;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.Repository;
@@ -179,10 +177,6 @@
         });
       } catch (OrmException x) {
         log.error(x.getMessage(), x);
-      } catch (MissingObjectException x) {
-        log.error(x.getMessage(), x);
-      } catch (IncorrectObjectTypeException x) {
-        log.error(x.getMessage(), x);
       } catch (IOException x) {
         log.error(x.getMessage(), x);
       } finally {