diff --git a/Libraries/LibWeb/HTML/HTMLInputElement.cpp b/Libraries/LibWeb/HTML/HTMLInputElement.cpp
index f510aec8fd8..c9a7b1c5040 100644
--- a/Libraries/LibWeb/HTML/HTMLInputElement.cpp
+++ b/Libraries/LibWeb/HTML/HTMLInputElement.cpp
@@ -1728,6 +1728,8 @@ Utf16String HTMLInputElement::value_sanitization_algorithm(Utf16String const& va
             // as a floating-point number, of the default value.
             auto maybe_value = parse_floating_point_number(value);
             if (!is_valid_floating_point_number(value) ||
+                // AD-HOC: Use the default value if the value has not been set.
+                (!m_dirty_value && !has_attribute(AttributeNames::value)) ||
                 // AD-HOC: The spec doesn't require these checks - but other engines do them.
                 !maybe_value.has_value() || !isfinite(maybe_value.value())) {
                 // The default value is the minimum plus half the difference between the minimum and the maximum, unless
diff --git a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/range.txt b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/range.txt
index 5024a4f28ba..87dbadccbeb 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/range.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/range.txt
@@ -2,8 +2,7 @@ Harness status: OK
 
 Found 25 tests
 
-23 Pass
-2 Fail
+25 Pass
 Pass	range type support on input element
 Pass	range overflow styles
 Pass	min attribute support on input element
@@ -16,8 +15,8 @@ Pass	the value is set to min when a smaller value than min attribute is given
 Pass	the value is set to max when a larger value than max attribute is given
 Pass	default value of min attribute in input type=range
 Pass	default value of max attribute in input type=range
-Fail	default value when min and max attributes are given (= min plus half the difference between min and max)
-Fail	default value with step control when both min and max attributes are given
+Pass	default value when min and max attributes are given (= min plus half the difference between min and max)
+Pass	default value with step control when both min and max attributes are given
 Pass	default value when both min and max attributes are given, while min > max
 Pass	The default step scale factor is 1, unless min attribute has non-integer value
 Pass	Step scale factor behavior when min attribute has integer value but max attribute is non-integer