diff --git a/luna/src/Bitmap.cpp b/luna/src/Bitmap.cpp
index 1928208e..a29fc947 100644
--- a/luna/src/Bitmap.cpp
+++ b/luna/src/Bitmap.cpp
@@ -62,6 +62,8 @@ void Bitmap::clear_region(usize start, usize bits, bool value)
     expect(initialized(), "Bitmap was never initialized");
     expect((start + bits) <= size(), "Bitmap clear out of range");
 
+    if (!bits) return;
+
     // Set individual bits while not on a byte boundary.
     while ((start % 8) && bits--)
     {