diff --git a/metafix/src/main/java/org/metafacture/metafix/Value.java b/metafix/src/main/java/org/metafacture/metafix/Value.java
index 57682d1c..29ee231d 100644
--- a/metafix/src/main/java/org/metafacture/metafix/Value.java
+++ b/metafix/src/main/java/org/metafacture/metafix/Value.java
@@ -21,6 +21,7 @@
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.ConcurrentModificationException;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -459,9 +460,10 @@ public void remove(final int index) {
      */
     public static class Hash extends AbstractValueType {
 
-        private final Map<String, Value> map = new LinkedHashMap<>();
+        private static final Map<String, Map<String, Boolean>> TRIE_CACHE = new HashMap<>();
+        private static final SimpleRegexTrie<String> TRIE = new SimpleRegexTrie<>();
 
-        private final SimpleRegexTrie<String> trie = new SimpleRegexTrie<>();
+        private final Map<String, Value> map = new LinkedHashMap<>();
 
         /**
          * Creates an empty instance of {@link Hash}.
@@ -695,8 +697,12 @@ private Stream<String> findFields(final String pattern) {
         }
 
         private <T> T matchFields(final String pattern, final BiFunction<Stream<String>, Predicate<String>, T> function) {
-            trie.put(pattern, pattern);
-            return function.apply(map.keySet().stream(), f -> trie.get(f).contains(pattern));
+            final Map<String, Boolean> matcher = TRIE_CACHE.computeIfAbsent(pattern, k -> {
+                TRIE.put(k, k);
+                return new HashMap<>();
+            });
+
+            return function.apply(map.keySet().stream(), f -> matcher.computeIfAbsent(f, k -> TRIE.get(k).contains(pattern)));
         }
 
     }
diff --git a/metafix/src/test/java/org/metafacture/metafix/HashValueTest.java b/metafix/src/test/java/org/metafacture/metafix/HashValueTest.java
index 4c859719..579bfbe2 100644
--- a/metafix/src/test/java/org/metafacture/metafix/HashValueTest.java
+++ b/metafix/src/test/java/org/metafacture/metafix/HashValueTest.java
@@ -16,8 +16,6 @@
 
 package org.metafacture.metafix;
 
-import org.metafacture.commons.tries.SimpleRegexTrie;
-
 import nl.jqno.equalsverifier.EqualsVerifier;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
@@ -46,8 +44,6 @@ public HashValueTest() {
     public void shouldSatisfyEqualsContract() {
         EqualsVerifier.forClass(Value.Hash.class)
             .withPrefabValues(Value.class, Value.newArray(), Value.newHash())
-            .withPrefabValues(SimpleRegexTrie.class, new SimpleRegexTrie<String>(), new SimpleRegexTrie<String>())
-            .withIgnoredFields("trie")
             .verify();
     }