diff --git a/java/com/google/gerrit/server/restapi/group/DeleteMembers.java b/java/com/google/gerrit/server/restapi/group/DeleteMembers.java
index 9bae2e2..fa1c5c6 100644
--- a/java/com/google/gerrit/server/restapi/group/DeleteMembers.java
+++ b/java/com/google/gerrit/server/restapi/group/DeleteMembers.java
@@ -14,6 +14,7 @@
 
 package com.google.gerrit.server.restapi.group;
 
+import com.google.common.base.Strings;
 import com.google.common.collect.Sets;
 import com.google.gerrit.common.data.GroupDescription;
 import com.google.gerrit.entities.Account;
@@ -68,6 +69,9 @@
 
     Set<Account.Id> membersToRemove = new HashSet<>();
     for (String nameOrEmail : input.members) {
+      if (Strings.isNullOrEmpty(nameOrEmail)) {
+        continue;
+      }
       membersToRemove.add(accountResolver.resolve(nameOrEmail).asUnique().account().id());
     }
     AccountGroup.UUID groupUuid = internalGroup.getGroupUUID();
diff --git a/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java b/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
index e543976..988580e 100644
--- a/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
@@ -187,6 +187,24 @@
   }
 
   @Test
+  public void removeMember_nullInMemberInputDoesNotCauseFailure() throws Exception {
+    AccountGroup.UUID group =
+        groupOperations.newGroup().addMember(admin.id()).addMember(user.id()).create();
+    gApi.groups().id(group.get()).removeMembers(user.id().toString(), null);
+    ImmutableSet<Account.Id> members = groupOperations.group(group).get().members();
+    assertThat(members).containsExactly(admin.id());
+  }
+
+  @Test
+  public void removeMember_emptyStringInMemberInputDoesNotCauseFailure() throws Exception {
+    AccountGroup.UUID group =
+        groupOperations.newGroup().addMember(admin.id()).addMember(user.id()).create();
+    gApi.groups().id(group.get()).removeMembers(user.id().toString(), "");
+    ImmutableSet<Account.Id> members = groupOperations.group(group).get().members();
+    assertThat(members).containsExactly(admin.id());
+  }
+
+  @Test
   public void cachedGroupsForMemberAreUpdatedOnMemberAdditionAndRemoval() throws Exception {
     String username = name("user");
     Account.Id accountId = accountOperations.newAccount().username(username).create();