diff --git a/spring-web/src/main/java/org/springframework/web/util/UriComponentsBuilder.java b/spring-web/src/main/java/org/springframework/web/util/UriComponentsBuilder.java
index 7779aff4afe..39d689be672 100644
--- a/spring-web/src/main/java/org/springframework/web/util/UriComponentsBuilder.java
+++ b/spring-web/src/main/java/org/springframework/web/util/UriComponentsBuilder.java
@@ -85,7 +85,7 @@ public class UriComponentsBuilder implements UriBuilder, Cloneable {
 
 	private static final String HOST_PATTERN = "(" + HOST_IPV6_PATTERN + "|" + HOST_IPV4_PATTERN + ")";
 
-	private static final String PORT_PATTERN = "(.[^/?#]*(?:\\{[^/]+?})?)";
+	private static final String PORT_PATTERN = "([^/?#]*)";
 
 	private static final String PATH_PATTERN = "([^?#]*)";