diff --git a/src/Items/ItemEmptyMap.h b/src/Items/ItemEmptyMap.h
index db28511f3..6618bfce2 100644
--- a/src/Items/ItemEmptyMap.h
+++ b/src/Items/ItemEmptyMap.h
@@ -36,10 +36,10 @@ public:
 
 		// The map center is fixed at the central point of the 8x8 block of chunks you are standing in when you right-click it.
 
-		const int RegionWidth = cChunkDef::Width * 8 * pow(2, DEFAULT_SCALE);
+		const int RegionWidth = cChunkDef::Width * 8 * pow(2.0, (double) DEFAULT_SCALE);
 
-		int CenterX = round(a_Player->GetPosX() / (float) RegionWidth) * RegionWidth;
-		int CenterZ = round(a_Player->GetPosZ() / (float) RegionWidth) * RegionWidth;
+		int CenterX = floor(a_Player->GetPosX() / (float) RegionWidth) * RegionWidth;
+		int CenterZ = floor(a_Player->GetPosZ() / (float) RegionWidth) * RegionWidth;
 
 		cMap * NewMap = a_World->GetMapManager().CreateMap(CenterX, CenterZ, DEFAULT_SCALE);
 
diff --git a/src/Map.cpp b/src/Map.cpp
index 2b8c4c74c..337c9cd31 100644
--- a/src/Map.cpp
+++ b/src/Map.cpp
@@ -51,8 +51,8 @@ void cMapDecorator::Update(void)
 		int InsideWidth  = (m_Map->GetWidth()  / 2) - 1;
 		int InsideHeight = (m_Map->GetHeight() / 2) - 1;
 
-		int PixelX = (m_Player->GetPosX() - m_Map->GetCenterX()) / PixelWidth;
-		int PixelZ = (m_Player->GetPosZ() - m_Map->GetCenterZ()) / PixelWidth;
+		int PixelX = (int) (m_Player->GetPosX() - m_Map->GetCenterX()) / PixelWidth;
+		int PixelZ = (int) (m_Player->GetPosZ() - m_Map->GetCenterZ()) / PixelWidth;
 
 		// Center of pixel
 		m_PixelX = (2 * PixelX) + 1;
@@ -69,11 +69,11 @@ void cMapDecorator::Update(void)
 				Int64 WorldAge = m_Player->GetWorld()->GetWorldAge();
 
 				// TODO 2014-02-19 xdot: Refine
-				m_Rot = Random.NextInt(16, WorldAge);
+				m_Rot = Random.NextInt(16, (int) WorldAge);
 			}
 			else
 			{
-				m_Rot = (Yaw * 16) / 360;
+				m_Rot = (int) (Yaw * 16) / 360;
 			}
 
 			m_Type = E_TYPE_PLAYER;
@@ -183,8 +183,8 @@ void cMap::UpdateRadius(cPlayer & a_Player, unsigned int a_Radius)
 {
 	unsigned int PixelWidth = GetPixelWidth();
 
-	int PixelX = (a_Player.GetPosX() - m_CenterX) / PixelWidth + (m_Width  / 2);
-	int PixelZ = (a_Player.GetPosZ() - m_CenterZ) / PixelWidth + (m_Height / 2);
+	int PixelX = (int) (a_Player.GetPosX() - m_CenterX) / PixelWidth + (m_Width  / 2);
+	int PixelZ = (int) (a_Player.GetPosZ() - m_CenterZ) / PixelWidth + (m_Height / 2);
 
 	UpdateRadius(PixelX, PixelZ, a_Radius);
 }
@@ -620,7 +620,7 @@ unsigned int cMap::GetNumDecorators(void) const
 
 unsigned int cMap::GetPixelWidth(void) const
 {
-	return pow(2, m_Scale);
+	return (int) pow(2.0, (double) m_Scale);
 }
 
 
diff --git a/src/WorldStorage/MapSerializer.cpp b/src/WorldStorage/MapSerializer.cpp
index 0bbe71a60..a4a0aab57 100644
--- a/src/WorldStorage/MapSerializer.cpp
+++ b/src/WorldStorage/MapSerializer.cpp
@@ -112,7 +112,7 @@ void cMapSerializer::SaveMapToNBT(cFastNBTWriter & a_Writer)
 	a_Writer.AddInt("zCenter", m_Map->GetCenterZ());
 
 	const cMap::cColorList & Data = m_Map->GetData();
-	a_Writer.AddByteArray("colors", (char *) Data.data(), Data.size());
+	a_Writer.AddByteArray("colors", (char *) &Data[0], Data.size());
 
 	a_Writer.EndCompound();
 }
@@ -178,7 +178,7 @@ bool cMapSerializer::LoadMapFromNBT(const cParsedNBT & a_NBT)
 	CurrLine = a_NBT.FindChildByName(Data, "colors");
 	if ((CurrLine >= 0) && (a_NBT.GetType(CurrLine) == TAG_ByteArray))
 	{
-		memcpy(m_Map->m_Data.data(), a_NBT.GetData(CurrLine), NumPixels);
+		memcpy(&m_Map->m_Data[0], a_NBT.GetData(CurrLine), NumPixels);
 	}
 
 	return true;