diff --git a/include/gp/math/integer_math.hpp b/include/gp/math/integer_math.hpp
index ea3e979..746dd01 100644
--- a/include/gp/math/integer_math.hpp
+++ b/include/gp/math/integer_math.hpp
@@ -49,7 +49,7 @@ namespace gp {
 			v |= v >> 16;
 			v |= v >> 32;
 
-			return MultiplyDeBruijnBitPosition[(uint64_t)(v * 0x03f6eaf2cd271461) >> 58];
+			return MultiplyDeBruijnBitPosition[(uint64_t)(v * 0x03f6eaf2cd271461ULL) >> 58];
 		}
 
 		static_assert(log2<uint32_t>(7) == 2, "bad log2");
diff --git a/include/gp/math/q_math.hpp b/include/gp/math/q_math.hpp
index e69de29..7b9637e 100644
--- a/include/gp/math/q_math.hpp
+++ b/include/gp/math/q_math.hpp
@@ -0,0 +1 @@
+#pragma once
\ No newline at end of file
diff --git a/include/gp/pointers.hpp b/include/gp/pointers.hpp
index 73dd08a..35e9ba9 100644
--- a/include/gp/pointers.hpp
+++ b/include/gp/pointers.hpp
@@ -10,9 +10,9 @@
 template<typename T>
 class unique_ptr {
 	T* data;
-	gp::allocator const& owner;
+	gp::allocator& owner;
 
-	unique_ptr(T* _data, gp::allocator const& _owner)
+	unique_ptr(T* _data, gp::allocator& _owner)
 	: data(data)
 	, owner(_owner)
 	{}
@@ -64,9 +64,9 @@ template<typename T>
 class shared_ptr {
 	T* data;
 	std::atomic_int* refcounter;
-	gp::allocator const& owner;
+	gp::allocator& owner;
 
-	shared_ptr(T* _data, gp::allocator const& _owner)
+	shared_ptr(T* _data, gp::allocator& _owner)
 	: data(data)
 	, owner(_owner)
 	{}