diff --git a/cmds/idmap2/idmap2/Lookup.cpp b/cmds/idmap2/idmap2/Lookup.cpp
index 8323d0b..437180d 100644
--- a/cmds/idmap2/idmap2/Lookup.cpp
+++ b/cmds/idmap2/idmap2/Lookup.cpp
@@ -71,7 +71,7 @@
   }
 
   // next, try to parse as a package:type/name string
-  if (auto resid = am.GetResourceId(res, "", fallback_package)) {
+  if (auto resid = am.GetResourceId(res, "", fallback_package); resid.ok()) {
     return *resid;
   }
 
@@ -94,7 +94,7 @@
     case Res_value::TYPE_STRING: {
       const ResStringPool* pool = am->GetStringPoolForCookie(value.cookie);
       out->append("\"");
-      if (auto str = pool->string8ObjectAt(value.data)) {
+      if (auto str = pool->string8ObjectAt(value.data); str.ok()) {
         out->append(*str);
       }
     } break;
diff --git a/cmds/idmap2/libidmap2/XmlParser.cpp b/cmds/idmap2/libidmap2/XmlParser.cpp
index 7c55b64..4030b83 100644
--- a/cmds/idmap2/libidmap2/XmlParser.cpp
+++ b/cmds/idmap2/libidmap2/XmlParser.cpp
@@ -98,7 +98,7 @@
 
   switch ((*value).dataType) {
     case Res_value::TYPE_STRING: {
-      if (auto str = parser_.getStrings().string8ObjectAt((*value).data)) {
+      if (auto str = parser_.getStrings().string8ObjectAt((*value).data); str.ok()) {
         return std::string(str->string());
       }
       break;
diff --git a/libs/androidfw/AssetManager2.cpp b/libs/androidfw/AssetManager2.cpp
index a545b3d..bec80a7 100644
--- a/libs/androidfw/AssetManager2.cpp
+++ b/libs/androidfw/AssetManager2.cpp
@@ -670,7 +670,7 @@
     }
 
     auto entry_flags = type_spec->GetFlagsForEntryIndex(entry_idx);
-    if (UNLIKELY(!entry_flags)) {
+    if (UNLIKELY(!entry_flags.has_value())) {
       return base::unexpected(entry_flags.error());
     }
     type_flags |= entry_flags.value();
diff --git a/libs/androidfw/ResourceTypes.cpp b/libs/androidfw/ResourceTypes.cpp
index 4010e4e..bce70e2 100644
--- a/libs/androidfw/ResourceTypes.cpp
+++ b/libs/androidfw/ResourceTypes.cpp
@@ -897,12 +897,12 @@
             // Decode the UTF-16 length. This is not used if we're not
             // converting to UTF-16 from UTF-8.
             const base::expected<size_t, IOError> u16len = decodeLength(&str);
-            if (UNLIKELY(!u16len)) {
+            if (UNLIKELY(!u16len.has_value())) {
                 return base::unexpected(u16len.error());
             }
 
             const base::expected<size_t, IOError> u8len = decodeLength(&str);
-            if (UNLIKELY(!u8len)) {
+            if (UNLIKELY(!u8len.has_value())) {
                 return base::unexpected(u8len.error());
             }
 
diff --git a/libs/androidfw/ResourceUtils.cpp b/libs/androidfw/ResourceUtils.cpp
index a34aa72..87fb2c0 100644
--- a/libs/androidfw/ResourceUtils.cpp
+++ b/libs/androidfw/ResourceUtils.cpp
@@ -56,7 +56,8 @@
     .package_len = package_name.size(),
   };
 
-  if (base::expected<StringPiece, NullOrIOError> type_str = type_string_ref.string8()) {
+  if (base::expected<StringPiece, NullOrIOError> type_str = type_string_ref.string8();
+      type_str.ok()) {
     name.type = type_str->data();
     name.type_len = type_str->size();
   } else if (UNLIKELY(IsIOError(type_str))) {
@@ -64,7 +65,8 @@
   }
 
   if (name.type == nullptr) {
-    if (base::expected<StringPiece16, NullOrIOError> type16_str = type_string_ref.string16()) {
+    if (base::expected<StringPiece16, NullOrIOError> type16_str = type_string_ref.string16();
+        type16_str.ok()) {
       name.type16 = type16_str->data();
       name.type_len = type16_str->size();
     } else if (!type16_str.has_value()) {
@@ -72,7 +74,8 @@
     }
   }
 
-  if (base::expected<StringPiece, NullOrIOError> entry_str = entry_string_ref.string8()) {
+  if (base::expected<StringPiece, NullOrIOError> entry_str = entry_string_ref.string8();
+      entry_str.ok()) {
     name.entry = entry_str->data();
     name.entry_len = entry_str->size();
   } else if (UNLIKELY(IsIOError(entry_str))) {
@@ -80,7 +83,8 @@
   }
 
   if (name.entry == nullptr) {
-    if (base::expected<StringPiece16, NullOrIOError> entry16_str = entry_string_ref.string16()) {
+    if (base::expected<StringPiece16, NullOrIOError> entry16_str = entry_string_ref.string16();
+        entry16_str.ok()) {
       name.entry16 = entry16_str->data();
       name.entry_len = entry16_str->size();
     } else if (!entry16_str.has_value()) {
diff --git a/tools/aapt2/util/Util.cpp b/tools/aapt2/util/Util.cpp
index ef33c34..793a236 100644
--- a/tools/aapt2/util/Util.cpp
+++ b/tools/aapt2/util/Util.cpp
@@ -531,14 +531,14 @@
 }
 
 StringPiece16 GetString16(const android::ResStringPool& pool, size_t idx) {
-  if (auto str = pool.stringAt(idx)) {
+  if (auto str = pool.stringAt(idx); str.ok()) {
     return *str;
   }
   return StringPiece16();
 }
 
 std::string GetString(const android::ResStringPool& pool, size_t idx) {
-  if (auto str = pool.string8At(idx)) {
+  if (auto str = pool.string8At(idx); str.ok()) {
     return ModifiedUtf8ToUtf8(str->to_string());
   }
   return Utf16ToUtf8(GetString16(pool, idx));