diff --git a/Kernel/VM/RangeAllocator.cpp b/Kernel/VM/RangeAllocator.cpp
index 29d9350483..3ab88abdea 100644
--- a/Kernel/VM/RangeAllocator.cpp
+++ b/Kernel/VM/RangeAllocator.cpp
@@ -67,7 +67,7 @@ Optional<Range> RangeAllocator::allocate_randomized(size_t size, size_t alignmen
     // FIXME: I'm sure there's a smarter way to do this.
     static constexpr size_t maximum_randomization_attempts = 1000;
     for (size_t i = 0; i < maximum_randomization_attempts; ++i) {
-        VirtualAddress random_address { round_up_to_power_of_two(get_fast_random<FlatPtr>(), alignment) };
+        VirtualAddress random_address { round_up_to_power_of_two(get_fast_random<FlatPtr>() % m_total_range.end().get(), alignment) };
 
         if (!m_total_range.contains(random_address, size))
             continue;