diff --git a/fs_mgr/liblp/builder.cpp b/fs_mgr/liblp/builder.cpp
index 41c01da..25a042f 100644
--- a/fs_mgr/liblp/builder.cpp
+++ b/fs_mgr/liblp/builder.cpp
@@ -214,7 +214,7 @@
     sABOverrideValue = ab_device;
 }
 
-MetadataBuilder::MetadataBuilder() : auto_slot_suffixing_(false), ignore_slot_suffixing_(false) {
+MetadataBuilder::MetadataBuilder() : auto_slot_suffixing_(false) {
     memset(&geometry_, 0, sizeof(geometry_));
     geometry_.magic = LP_METADATA_GEOMETRY_MAGIC;
     geometry_.struct_size = sizeof(geometry_);
@@ -443,11 +443,6 @@
         LERROR << "Could not find partition group: " << group_name;
         return nullptr;
     }
-    if (IsABDevice() && !auto_slot_suffixing_ && name != "scratch" && !ignore_slot_suffixing_ &&
-        GetPartitionSlotSuffix(name).empty()) {
-        LERROR << "Unsuffixed partition not allowed on A/B device: " << name;
-        return nullptr;
-    }
     partitions_.push_back(std::make_unique<Partition>(name, group_name, attributes));
     return partitions_.back().get();
 }
@@ -1049,10 +1044,6 @@
     auto_slot_suffixing_ = true;
 }
 
-void MetadataBuilder::IgnoreSlotSuffixing() {
-    ignore_slot_suffixing_ = true;
-}
-
 bool MetadataBuilder::IsABDevice() const {
     if (sABOverrideSet) {
         return sABOverrideValue;
diff --git a/fs_mgr/liblp/builder_test.cpp b/fs_mgr/liblp/builder_test.cpp
index 45c3ede..34c68d4 100644
--- a/fs_mgr/liblp/builder_test.cpp
+++ b/fs_mgr/liblp/builder_test.cpp
@@ -772,15 +772,6 @@
     EXPECT_FALSE(builder->ImportPartitions(*exported.get(), {"system"}));
 }
 
-TEST_F(BuilderTest, UnsuffixedPartitions) {
-    MetadataBuilder::OverrideABForTesting(true);
-    unique_ptr<MetadataBuilder> builder = MetadataBuilder::New(1024 * 1024, 1024, 2);
-    ASSERT_NE(builder, nullptr);
-
-    ASSERT_EQ(builder->AddPartition("system", 0), nullptr);
-    ASSERT_NE(builder->AddPartition("system_a", 0), nullptr);
-}
-
 TEST_F(BuilderTest, ABExtents) {
     BlockDeviceInfo device_info("super", 10_GiB, 768 * 1024, 0, 4096);
 
diff --git a/fs_mgr/liblp/include/liblp/builder.h b/fs_mgr/liblp/include/liblp/builder.h
index c706f2a..e70c552 100644
--- a/fs_mgr/liblp/include/liblp/builder.h
+++ b/fs_mgr/liblp/include/liblp/builder.h
@@ -345,7 +345,6 @@
     std::vector<std::unique_ptr<PartitionGroup>> groups_;
     std::vector<LpMetadataBlockDevice> block_devices_;
     bool auto_slot_suffixing_;
-    bool ignore_slot_suffixing_;
 };
 
 // Read BlockDeviceInfo for a given block device. This always returns false