diff --git a/Mage/src/main/java/mage/abilities/costs/mana/ManaSymbols.java b/Mage/src/main/java/mage/abilities/costs/mana/ManaSymbols.java
index 5b7d658b31..42dde43669 100644
--- a/Mage/src/main/java/mage/abilities/costs/mana/ManaSymbols.java
+++ b/Mage/src/main/java/mage/abilities/costs/mana/ManaSymbols.java
@@ -6,6 +6,7 @@ import mage.ManaSymbol;
 import mage.constants.ColoredManaSymbol;
 
 import java.util.ArrayList;
+import java.util.EnumMap;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -16,7 +17,7 @@ import java.util.Map;
  */
 public class ManaSymbols extends ArrayList<ManaSymbol> {
 
-    private final static Map<ColoredManaSymbol, ManaSymbol> coloredManaMap = new HashMap<ColoredManaSymbol, ManaSymbol>() {{
+    private final static Map<ColoredManaSymbol, ManaSymbol> coloredManaMap = new EnumMap<ColoredManaSymbol, ManaSymbol>(ColoredManaSymbol.class) {{
         put(ColoredManaSymbol.W, ManaSymbol.W);
         put(ColoredManaSymbol.U, ManaSymbol.U);
         put(ColoredManaSymbol.B, ManaSymbol.B);
@@ -28,23 +29,22 @@ public class ManaSymbols extends ArrayList<ManaSymbol> {
      * Contains all possible hybrid mana costs (each represents different hybrid mana symbol)
      * We'll use it for converting from hybrid mana cost to hybrid mana symbol.
      */
-    private final static Map<ManaSymbol, HybridManaCost> hybridManaMap = new HashMap<>();
+    private final static Map<ManaSymbol, HybridManaCost> hybridManaMap = new EnumMap<ManaSymbol, HybridManaCost>(ManaSymbol.class) {{
 
     /**
      *  Build map of all possible hybrid mana symbols assigning corresponding instance of hybrid mana cost.
      */
-    static {
-        hybridManaMap.put(ManaSymbol.HYBRID_BG, new HybridManaCost(ColoredManaSymbol.B, ColoredManaSymbol.G));
-        hybridManaMap.put(ManaSymbol.HYBRID_BR, new HybridManaCost(ColoredManaSymbol.B, ColoredManaSymbol.R));
-        hybridManaMap.put(ManaSymbol.HYBRID_GU, new HybridManaCost(ColoredManaSymbol.G, ColoredManaSymbol.U));
-        hybridManaMap.put(ManaSymbol.HYBRID_GW, new HybridManaCost(ColoredManaSymbol.G, ColoredManaSymbol.W));
-        hybridManaMap.put(ManaSymbol.HYBRID_RG, new HybridManaCost(ColoredManaSymbol.R, ColoredManaSymbol.G));
-        hybridManaMap.put(ManaSymbol.HYBRID_RW, new HybridManaCost(ColoredManaSymbol.R, ColoredManaSymbol.W));
-        hybridManaMap.put(ManaSymbol.HYBRID_UB, new HybridManaCost(ColoredManaSymbol.U, ColoredManaSymbol.B));
-        hybridManaMap.put(ManaSymbol.HYBRID_UR, new HybridManaCost(ColoredManaSymbol.U, ColoredManaSymbol.R));
-        hybridManaMap.put(ManaSymbol.HYBRID_WB, new HybridManaCost(ColoredManaSymbol.W, ColoredManaSymbol.B));
-        hybridManaMap.put(ManaSymbol.HYBRID_WU, new HybridManaCost(ColoredManaSymbol.W, ColoredManaSymbol.U));
-    }
+        put(ManaSymbol.HYBRID_BG, new HybridManaCost(ColoredManaSymbol.B, ColoredManaSymbol.G));
+        put(ManaSymbol.HYBRID_BR, new HybridManaCost(ColoredManaSymbol.B, ColoredManaSymbol.R));
+        put(ManaSymbol.HYBRID_GU, new HybridManaCost(ColoredManaSymbol.G, ColoredManaSymbol.U));
+        put(ManaSymbol.HYBRID_GW, new HybridManaCost(ColoredManaSymbol.G, ColoredManaSymbol.W));
+        put(ManaSymbol.HYBRID_RG, new HybridManaCost(ColoredManaSymbol.R, ColoredManaSymbol.G));
+        put(ManaSymbol.HYBRID_RW, new HybridManaCost(ColoredManaSymbol.R, ColoredManaSymbol.W));
+        put(ManaSymbol.HYBRID_UB, new HybridManaCost(ColoredManaSymbol.U, ColoredManaSymbol.B));
+        put(ManaSymbol.HYBRID_UR, new HybridManaCost(ColoredManaSymbol.U, ColoredManaSymbol.R));
+        put(ManaSymbol.HYBRID_WB, new HybridManaCost(ColoredManaSymbol.W, ColoredManaSymbol.B));
+        put(ManaSymbol.HYBRID_WU, new HybridManaCost(ColoredManaSymbol.W, ColoredManaSymbol.U));
+    }};
 
     /**
      * Extracts mana symbols from {@link ManaCost} using {@link mage.ManaSymbol} as a base class for the mana symbols.
diff --git a/Mage/src/main/java/mage/players/PlayerImpl.java b/Mage/src/main/java/mage/players/PlayerImpl.java
index 4961d501b0..5f0d1fe40b 100644
--- a/Mage/src/main/java/mage/players/PlayerImpl.java
+++ b/Mage/src/main/java/mage/players/PlayerImpl.java
@@ -181,7 +181,7 @@ public abstract class PlayerImpl implements Player, Serializable {
     /**
      * During some steps we can't play anything
      */
-    protected final Map<PhaseStep, Step.StepPart> silentPhaseSteps = new HashMap<PhaseStep, Step.StepPart>() {
+    protected final Map<PhaseStep, Step.StepPart> silentPhaseSteps = new EnumMap<PhaseStep, Step.StepPart>(PhaseStep.class) {
         {
             put(PhaseStep.DECLARE_ATTACKERS, Step.StepPart.PRE);
         }