diff --git a/external/3rd/library/platform/utils/Base/BlockAllocator.h b/external/3rd/library/platform/utils/Base/BlockAllocator.h
index 5daf69da..bbfbf273 100644
--- a/external/3rd/library/platform/utils/Base/BlockAllocator.h
+++ b/external/3rd/library/platform/utils/Base/BlockAllocator.h
@@ -20,7 +20,7 @@ namespace Base
 		void returnBlock(unsigned *handle);
 
 	private:
-		unsigned  *m_blocks[31];
+		uintptr_t  *m_blocks[31];
 	};
 };
 #ifdef EXTERNAL_DISTRO
diff --git a/external/3rd/library/platform/utils/Base/win32/BlockAllocator.cpp b/external/3rd/library/platform/utils/Base/win32/BlockAllocator.cpp
index 9fa8b645..029946b4 100644
--- a/external/3rd/library/platform/utils/Base/win32/BlockAllocator.cpp
+++ b/external/3rd/library/platform/utils/Base/win32/BlockAllocator.cpp
@@ -23,8 +23,8 @@ namespace Base
 		{
 			while(m_blocks[i] != NULL)
 			{
-				unsigned *tmp = m_blocks[i];
-				m_blocks[i] = (unsigned *)*m_blocks[i];
+				uintptr_t *tmp = m_blocks[i];
+				m_blocks[i] = (uintptr_t *)*m_blocks[i];
 				free(tmp);
 			}
 		}
@@ -36,7 +36,7 @@ namespace Base
 	void *BlockAllocator::getBlock(unsigned bytes)
 	{
 		unsigned accum = 16, bits = 16;
-		unsigned *handle = NULL;
+		uintptr_t *handle = NULL;
 
 		// Perform a binary search looking for the highest bit.
 
@@ -79,7 +79,7 @@ namespace Base
 		if(m_blocks[accum] == 0)
 		{
 			// remove the pre allocated block from the linked list
-			handle = (unsigned *)calloc(((1 << accum) / 4) + 2, sizeof(unsigned));
+			handle = (uintptr_t *)calloc(((1 << accum) / 4) + 2, sizeof(unsigned));
 			handle[1] = accum;
 			handle[0] = 0;
 		}
@@ -87,7 +87,7 @@ namespace Base
 		{
 			// Allocate a new block 
 			handle = m_blocks[accum];
-			m_blocks[accum] = (unsigned *)handle[0];
+			m_blocks[accum] = (uintptr_t *)handle[0];
 			handle[0] = 0;
 		}
 		// return a pointer that skips over the header used for the allocator's purposes
@@ -100,7 +100,7 @@ namespace Base
 		if(handle)
 		{
 			// Update the allocator linked list, insert this entry at the head
-			*(handle - 2) = (unsigned)m_blocks[*(handle - 1)];
+			*(handle - 2) = (uintptr_t)m_blocks[*(handle - 1)];
 			// Add this entry to the proper linked list node
 			m_blocks[*(handle - 1)] = (handle - 2);
 		}