diff --git a/src/Subscription.h b/src/Subscription.h
index 181be44..4ffe786 100644
--- a/src/Subscription.h
+++ b/src/Subscription.h
@@ -6,11 +6,11 @@
 
 
 struct SubId {
-    char buf[64];
+    char buf[72];
 
     SubId(std::string_view val) {
-        static_assert(MAX_SUBID_SIZE == 63, "MAX_SUBID_SIZE mismatch");
-        if (val.size() > 63) throw herr("subscription id too long");
+        static_assert(MAX_SUBID_SIZE == 71, "MAX_SUBID_SIZE mismatch");
+        if (val.size() > 71) throw herr("subscription id too long");
         if (val.size() == 0) throw herr("subscription id too short");
 
         auto badChar = [](char c){
diff --git a/src/constants.h b/src/constants.h
index 89ea623..831e58f 100644
--- a/src/constants.h
+++ b/src/constants.h
@@ -1,4 +1,4 @@
 #pragma once
 
-const size_t MAX_SUBID_SIZE = 63; // Statically allocated size in SubId
+const size_t MAX_SUBID_SIZE = 71; // Statically allocated size in SubId
 const uint64_t MAX_TIMESTAMP = 17179869184; // Safety limit to ensure it can fit in quadrable key. Good until year 2514.