diff --git a/src/gamedata/resourcefiles/resourcefile.cpp b/src/gamedata/resourcefiles/resourcefile.cpp
index d934c98f2..ab1baa57c 100644
--- a/src/gamedata/resourcefiles/resourcefile.cpp
+++ b/src/gamedata/resourcefiles/resourcefile.cpp
@@ -376,8 +376,8 @@ void FResourceFile::GenerateHash()
 	for(uint32_t i = 0; i < NumLumps; i++)
 	{
 		auto lump = GetLump(i);
-		md5.Update((const uint8_t*)lump->Name, strlen(lump->Name) + 1); // +1 to hash the terminating 0 as well.
-		md5.Update((const uint8_t*)lump->FullName.GetChars(), lump->FullName.Len() + 1);
+		md5.Update((const uint8_t*)lump->Name, (unsigned)strlen(lump->Name) + 1); // +1 to hash the terminating 0 as well.
+		md5.Update((const uint8_t*)lump->FullName.GetChars(), (unsigned)lump->FullName.Len() + 1);
 		md5.Update((const uint8_t*)&lump->LumpSize, 4);
 	}
 	md5.Final(digest);
diff --git a/src/scripting/vmthunks.cpp b/src/scripting/vmthunks.cpp
index fc12c97fa..b8ccdbbcd 100644
--- a/src/scripting/vmthunks.cpp
+++ b/src/scripting/vmthunks.cpp
@@ -1340,9 +1340,9 @@ DEFINE_ACTION_FUNCTION_NATIVE(_Sector, SetXOffset, SetXOffset)
 	 return 0;
  }
 
- static F3DFloor* Get3DFloor(sector_t *self, int index)
+ static F3DFloor* Get3DFloor(sector_t *self, unsigned int index)
  {
- 	 if ((index < 0) || (index >= self->e->XFloor.ffloors.Size()))
+ 	 if (index >= self->e->XFloor.ffloors.Size())
  	 	return nullptr;
 	 return self->e->XFloor.ffloors[index];
  }
@@ -1365,9 +1365,9 @@ DEFINE_ACTION_FUNCTION_NATIVE(_Sector, SetXOffset, SetXOffset)
 	 ACTION_RETURN_INT(self->e->XFloor.ffloors.Size());
  }
 
- static sector_t* GetAttached(sector_t *self, int index)
+ static sector_t* GetAttached(sector_t *self, unsigned int index)
  {
- 	 if ((index < 0) || (index >= self->e->XFloor.attached.Size()))
+ 	 if (index >= self->e->XFloor.attached.Size())
  	 	return nullptr;
 	 return self->e->XFloor.attached[index];
  }