diff --git a/Core/Memory/MemoryManager.cpp b/Core/Memory/MemoryManager.cpp
index b76eb6f..3f643e4 100644
--- a/Core/Memory/MemoryManager.cpp
+++ b/Core/Memory/MemoryManager.cpp
@@ -60,7 +60,7 @@ namespace Memory
         else if (Whence == SEEK_CUR)
         {
             NewOffset = node->Offset + Offset;
-            if (NewOffset > node->Length || NewOffset < 0)
+            if ((size_t)NewOffset > node->Length || NewOffset < 0)
                 return -1;
             node->Offset = NewOffset;
         }
diff --git a/FileSystem/FS/ustar.cpp b/FileSystem/FS/ustar.cpp
index 6adb5f2..b97e145 100644
--- a/FileSystem/FS/ustar.cpp
+++ b/FileSystem/FS/ustar.cpp
@@ -50,7 +50,7 @@ namespace VirtualFileSystem
         else if (Whence == SEEK_CUR)
         {
             NewOffset = node->Offset + Offset;
-            if (NewOffset > node->Length || NewOffset < 0)
+            if ((size_t)NewOffset > node->Length || NewOffset < 0)
                 return -1;
             node->Offset = NewOffset;
         }