2 files changed, 6 insertions, 2 deletions

diff --git a/minui/resources.cpp b/minui/resources.cpp
index 53c932bff..00d36d5fb 100644
--- a/minui/resources.cpp
+++ b/minui/resources.cpp
@@ -347,6 +347,10 @@ bool matches_locale(const std::string& prefix, const std::string& locale) {
   // match the locale string without the {script} section.
   // For instance, prefix == "en" matches locale == "en-US", prefix == "sr-Latn" matches locale
   // == "sr-Latn-BA", and prefix == "zh-CN" matches locale == "zh-Hans-CN".
+  if (prefix.empty()) {
+    return false;
+  }
+
   if (android::base::StartsWith(locale, prefix)) {
     return true;
   }
diff --git a/tests/unit/locale_test.cpp b/tests/unit/locale_test.cpp
index cdaba0e8b..c69434c12 100644
--- a/tests/unit/locale_test.cpp
+++ b/tests/unit/locale_test.cpp
@@ -27,7 +27,7 @@ TEST(LocaleTest, Misc) {
   EXPECT_FALSE(matches_locale("en-GB", "en"));
   EXPECT_FALSE(matches_locale("en-GB", "en-US"));
   EXPECT_FALSE(matches_locale("en-US", ""));
-  // Empty locale prefix in the PNG file will match the input locale.
-  EXPECT_TRUE(matches_locale("", "en-US"));
+  // Empty locale prefix in the PNG file should not match the input locale.
+  EXPECT_FALSE(matches_locale("", "en-US"));
   EXPECT_TRUE(matches_locale("sr-Latn", "sr-Latn-BA"));
 }