diff --git a/core/src/main/groovy/com/muwire/core/Constants.groovy b/core/src/main/groovy/com/muwire/core/Constants.groovy
index 7a2ea548..075a9b4a 100644
--- a/core/src/main/groovy/com/muwire/core/Constants.groovy
+++ b/core/src/main/groovy/com/muwire/core/Constants.groovy
@@ -9,5 +9,5 @@ class Constants {
     public static final int MAX_HEADER_SIZE = 0x1 << 14
     public static final int MAX_HEADERS = 16
     
-    public static final String SPLIT_PATTERN = "[\\*\\+\\-,\\.:;\\(\\)=_/\\\\\\!\\\"\\\'\\\$%\\|\\[\\]\\{\\}]"
+    public static final String SPLIT_PATTERN = "[\\*\\+\\-,\\.:;\\(\\)=_/\\\\\\!\\\"\\\'\\\$%\\|\\[\\]\\{\\}\\?]"
 }