diff --git a/forge-core/src/main/java/forge/card/BoosterGenerator.java b/forge-core/src/main/java/forge/card/BoosterGenerator.java
index bda9a164316..db37eaa0212 100644
--- a/forge-core/src/main/java/forge/card/BoosterGenerator.java
+++ b/forge-core/src/main/java/forge/card/BoosterGenerator.java
@@ -70,7 +70,7 @@ public class BoosterGenerator {
         List<PrintSheet> sheetsUsed = new ArrayList<PrintSheet>();
 
         CardEdition edition = StaticData.instance().getEditions().get(template.getEdition());
-        boolean hasFoil = edition != null && MyRandom.getRandom().nextInt(100) <= edition.getFoilChanceInBooster() && edition.getFoilType() != FoilType.NOT_SUPPORTED;
+        boolean hasFoil = edition != null && MyRandom.getRandom().nextInt(10000) <= edition.getFoilChanceInBooster() && edition.getFoilType() != FoilType.NOT_SUPPORTED; // FoilChanceInBooster is given with 1/10000th precision for a closer 1:6 (16.67%) approximation.
         String foilSlot = !hasFoil ? null : edition.getFoilAlwaysInCommonSlot() ? BoosterSlots.COMMON : Aggregates.random(template.getSlots()).getKey();
         
         for(Pair<String, Integer> slot : template.getSlots()) {
diff --git a/forge-core/src/main/java/forge/card/CardEdition.java b/forge-core/src/main/java/forge/card/CardEdition.java
index a418cc1aa7a..48688b0e61e 100644
--- a/forge-core/src/main/java/forge/card/CardEdition.java
+++ b/forge-core/src/main/java/forge/card/CardEdition.java
@@ -297,7 +297,7 @@ public final class CardEdition implements Comparable<CardEdition> { // immutable
                     res.foilType = FoilType.NOT_SUPPORTED;
                     break;
             }
-            res.foilChanceInBooster = section.getInt("FoilChanceInBooster", 16);
+            res.foilChanceInBooster = section.getInt("FoilChanceInBooster", 1667);
             res.foilAlwaysInCommonSlot = section.getBoolean("FoilAlwaysInCommonSlot", false);
             
             return res;