diff --git a/src/main/java/io/phasetwo/keycloak/themes/resource/AssetsResourceProvider.java b/src/main/java/io/phasetwo/keycloak/themes/resource/AssetsResourceProvider.java
index d27a395..a071dc9 100644
--- a/src/main/java/io/phasetwo/keycloak/themes/resource/AssetsResourceProvider.java
+++ b/src/main/java/io/phasetwo/keycloak/themes/resource/AssetsResourceProvider.java
@@ -70,7 +70,8 @@ private Response resourceRedirect(UriInfo uriInfo, String key, String defaultPat
                     "%s/%s/%s",
                     theme.getType().toString().toLowerCase(), theme.getName(), defaultPath));
       } else {
-        redir = new URI(imgUrl);
+        // ensure no leading or following spaces
+        redir = new URI(imgUrl.trim());
       }
       log.debugf("redirecting to %s", redir);
       return Response.seeOther(redir).build();