diff --git a/Libraries/LibJS/Runtime/StringPrototype.cpp b/Libraries/LibJS/Runtime/StringPrototype.cpp
index 6b9fa42c3a..b515e9a606 100644
--- a/Libraries/LibJS/Runtime/StringPrototype.cpp
+++ b/Libraries/LibJS/Runtime/StringPrototype.cpp
@@ -245,9 +245,9 @@ enum class TrimMode {
     Both
 };
 
-static Value trim_string(Interpreter& interpreter, Object* object, TrimMode mode)
+static Value trim_string(Interpreter& interpreter, const Object& object, TrimMode mode)
 {
-    auto& string = object->to_string().as_string()->string();
+    auto& string = object.to_string().as_string()->string();
 
     size_t substring_start = 0;
     size_t substring_length = string.length();
@@ -258,7 +258,7 @@ static Value trim_string(Interpreter& interpreter, Object* object, TrimMode mode
 
     if (mode == TrimMode::Left || mode == TrimMode::Both) {
         for (size_t i = 0; i < string.length(); ++i) {
-            if (!is_white_space_character(string.characters()[i])) {
+            if (!is_white_space_character(string[i])) {
                 substring_start = i;
                 substring_length -= substring_start;
                 break;
@@ -267,12 +267,12 @@ static Value trim_string(Interpreter& interpreter, Object* object, TrimMode mode
     }
 
     if (substring_length == 0)
-        return js_string(interpreter, String());
+        return js_string(interpreter, String(""));
 
     if (mode == TrimMode::Right || mode == TrimMode::Both) {
         size_t count = 0;
         for (size_t i = string.length() - 1; i > 0; --i) {
-            if (!is_white_space_character(string.characters()[i])) {
+            if (!is_white_space_character(string[i])) {
                 substring_length -= count;
                 break;
             }
@@ -280,29 +280,31 @@ static Value trim_string(Interpreter& interpreter, Object* object, TrimMode mode
         }
     }
 
-    auto substring = string.substring(substring_start, substring_length);
-    return js_string(interpreter, substring);
+    return js_string(interpreter, string.substring(substring_start, substring_length));
 }
 
 Value StringPrototype::trim(Interpreter& interpreter)
 {
     auto* this_object = interpreter.this_value().to_object(interpreter.heap());
-
-    return trim_string(interpreter, this_object, TrimMode::Both);
+    if (!this_object)
+        return {};
+    return trim_string(interpreter, *this_object, TrimMode::Both);
 }
 
-Value StringPrototype::trimStart(Interpreter& interpreter)
+Value StringPrototype::trim_start(Interpreter& interpreter)
 {
     auto* this_object = interpreter.this_value().to_object(interpreter.heap());
-
-    return trim_string(interpreter, this_object, TrimMode::Left);
+    if (!this_object)
+        return {};
+    return trim_string(interpreter, *this_object, TrimMode::Left);
 }
 
-Value StringPrototype::trimEnd(Interpreter& interpreter)
+Value StringPrototype::trim_end(Interpreter& interpreter)
 {
     auto* this_object = interpreter.this_value().to_object(interpreter.heap());
-
-    return trim_string(interpreter, this_object, TrimMode::Right);
+    if (!this_object)
+        return {};
+    return trim_string(interpreter, *this_object, TrimMode::Right);
 }
 
 }
diff --git a/Libraries/LibJS/Runtime/StringPrototype.h b/Libraries/LibJS/Runtime/StringPrototype.h
index ac7fb13a92..f9e5b12b43 100644
--- a/Libraries/LibJS/Runtime/StringPrototype.h
+++ b/Libraries/LibJS/Runtime/StringPrototype.h
@@ -51,8 +51,8 @@ private:
     static Value length_getter(Interpreter&);
 
     static Value trim(Interpreter&);
-    static Value trimStart(Interpreter&);
-    static Value trimEnd(Interpreter&);
+    static Value trim_start(Interpreter&);
+    static Value trim_end(Interpreter&);
 };
 
 }