diff --git a/adb/adb_utils.h b/adb/adb_utils.h
index a85ca8c..8b0dcee 100644
--- a/adb/adb_utils.h
+++ b/adb/adb_utils.h
@@ -110,7 +110,7 @@
 
 // Base-10 stroll on a string_view.
 template <typename T>
-inline bool ParseUint(T* result, std::string_view str, std::string_view* remaining) {
+inline bool ParseUint(T* result, std::string_view str, std::string_view* remaining = nullptr) {
     if (str.empty() || !isdigit(str[0])) {
         return false;
     }
@@ -135,6 +135,9 @@
     *result = value;
     if (remaining) {
         *remaining = str.substr(it - str.begin());
+    } else {
+      return it == str.end();
     }
+
     return true;
 }
diff --git a/adb/adb_utils_test.cpp b/adb/adb_utils_test.cpp
index 8518e17..bd676c2 100644
--- a/adb/adb_utils_test.cpp
+++ b/adb/adb_utils_test.cpp
@@ -206,6 +206,14 @@
             EXPECT_EQ(remaining, "foo");
         }
     }
+
+    // With trailing text, without remaining.
+    {
+        std::string text = std::string(string) + "foo";
+        uint32_t value;
+        bool success = ParseUint(&value, text, nullptr);
+        EXPECT_EQ(success, false);
+    }
 }
 
 TEST(adb_utils, ParseUint) {