diff --git a/libs/androidfw/ApkParsing.cpp b/libs/androidfw/ApkParsing.cpp
index cf4fbb9..32d2c5b 100644
--- a/libs/androidfw/ApkParsing.cpp
+++ b/libs/androidfw/ApkParsing.cpp
@@ -56,10 +56,8 @@
         return nullptr;
     }
 
-    // Make sure there aren't subdirectories
-    const char* abiOffset = fileName + APK_LIB_LEN;
-    const size_t abiSize = lastSlash - abiOffset;
-    if (memchr(abiOffset, '/', abiSize)) {
+    // Make sure there aren't subdirectories by checking if the next / after lib/ is the last slash
+    if (memchr(fileName + APK_LIB_LEN, '/', fileNameLen - APK_LIB_LEN) != lastSlash) {
         return nullptr;
     }
 
diff --git a/libs/androidfw/tests/ApkParsing_test.cpp b/libs/androidfw/tests/ApkParsing_test.cpp
index 4aab0a1..62e88c6 100644
--- a/libs/androidfw/tests/ApkParsing_test.cpp
+++ b/libs/androidfw/tests/ApkParsing_test.cpp
@@ -68,4 +68,10 @@
   auto lastSlash = util::ValidLibraryPathLastSlash(path, false, false);
   ASSERT_THAT(lastSlash, IsNull());
 }
+
+TEST(ApkParsingTest, InvalidFileAtRoot) {
+  const char* path = "lib/library.so";
+  auto lastSlash = util::ValidLibraryPathLastSlash(path, false, false);
+  ASSERT_THAT(lastSlash, IsNull());
+}
 }
\ No newline at end of file