diff --git a/tools/aapt2/util/Files.cpp b/tools/aapt2/util/Files.cpp
index 5d57de6a9fb1b..be09545abb450 100644
--- a/tools/aapt2/util/Files.cpp
+++ b/tools/aapt2/util/Files.cpp
@@ -154,7 +154,7 @@ StringPiece GetFilename(const StringPiece& path) {
   const char* end = path.end();
   const char* last_dir_sep = path.begin();
   for (const char* c = path.begin(); c != end; ++c) {
-    if (*c == sDirSep) {
+    if (*c == sDirSep || *c == sInvariantDirSep) {
       last_dir_sep = c + 1;
     }
   }
diff --git a/tools/aapt2/util/Files.h b/tools/aapt2/util/Files.h
index 481a4cdb6ad09..e50cb505bf668 100644
--- a/tools/aapt2/util/Files.h
+++ b/tools/aapt2/util/Files.h
@@ -41,6 +41,8 @@ constexpr const char sDirSep = '/';
 constexpr const char sPathSep = ':';
 #endif
 
+constexpr const char sInvariantDirSep = '/';
+
 enum class FileType {
   kUnknown = 0,
   kNonexistant,