diff --git a/Libraries/LibWeb/WebIDL/AbstractOperations.cpp b/Libraries/LibWeb/WebIDL/AbstractOperations.cpp
index ec8d0714a3..c60bd0b62e 100644
--- a/Libraries/LibWeb/WebIDL/AbstractOperations.cpp
+++ b/Libraries/LibWeb/WebIDL/AbstractOperations.cpp
@@ -517,7 +517,7 @@ JS::ThrowCompletionOr<T> convert_to_int(JS::VM& vm, JS::Value value, EnforceRang
 
         // 2. Round x to the nearest integer, choosing the even integer if it lies halfway between two, and choosing +0 rather than −0.
         // 3. Return x.
-        return round(x);
+        return AK::round_to<T>(x);
     }
 
     // 8. If x is NaN, +0, +∞, or −∞, then return +0.
diff --git a/Tests/LibWeb/Text/expected/wpt-import/FileAPI/blob/Blob-slice.any.txt b/Tests/LibWeb/Text/expected/wpt-import/FileAPI/blob/Blob-slice.any.txt
index c65d0976b6..4d425deeb2 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/FileAPI/blob/Blob-slice.any.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/FileAPI/blob/Blob-slice.any.txt
@@ -2,8 +2,7 @@ Harness status: OK
 
 Found 150 tests
 
-145 Pass
-5 Fail
+150 Pass
 Pass	no-argument Blob slice
 Pass	Slices
 Pass	blob1.
@@ -33,23 +32,23 @@ Pass	Slicing test: slice (0,7).
 Pass	Slicing test (0,8).
 Pass	Slicing test: slice (0,8).
 Pass	Slicing test (1,0).
-Fail	Slicing test: slice (1,0).
+Pass	Slicing test: slice (1,0).
 Pass	Slicing test (1,1).
 Pass	Slicing test: slice (1,1).
 Pass	Slicing test (1,2).
-Fail	Slicing test: slice (1,2).
+Pass	Slicing test: slice (1,2).
 Pass	Slicing test (1,3).
 Pass	Slicing test: slice (1,3).
 Pass	Slicing test (1,4).
-Fail	Slicing test: slice (1,4).
+Pass	Slicing test: slice (1,4).
 Pass	Slicing test (1,5).
 Pass	Slicing test: slice (1,5).
 Pass	Slicing test (1,6).
-Fail	Slicing test: slice (1,6).
+Pass	Slicing test: slice (1,6).
 Pass	Slicing test (1,7).
 Pass	Slicing test: slice (1,7).
 Pass	Slicing test (1,8).
-Fail	Slicing test: slice (1,8).
+Pass	Slicing test: slice (1,8).
 Pass	Slicing test (1,9).
 Pass	Slicing test: slice (1,9).
 Pass	Slicing test (2,0).