diff --git a/spring-core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java b/spring-core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java
index f981d44d36..e113ad1632 100644
--- a/spring-core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java
+++ b/spring-core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -503,7 +503,7 @@ public class GenericConversionService implements ConfigurableConversionService {
 		private final Set<GenericConverter> globalConverters = new LinkedHashSet<GenericConverter>();
 
 		private final Map<ConvertiblePair, ConvertersForPair> converters =
-				new LinkedHashMap<ConvertiblePair, ConvertersForPair>(36);
+				new LinkedHashMap<ConvertiblePair, ConvertersForPair>(256);
 
 		public void add(GenericConverter converter) {
 			Set<ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
@@ -514,8 +514,7 @@ public class GenericConversionService implements ConfigurableConversionService {
 			}
 			else {
 				for (ConvertiblePair convertiblePair : convertibleTypes) {
-					ConvertersForPair convertersForPair = getMatchableConverters(convertiblePair);
-					convertersForPair.add(converter);
+					getMatchableConverters(convertiblePair).add(converter);
 				}
 			}
 		}