diff --git a/src/protocol.h b/src/protocol.h
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -309,6 +309,9 @@
     // See BIP159 for details on how this is implemented.
     NODE_NETWORK_LIMITED = (1 << 10),
 
+    // The last non experimental service bit, helper for looping over the flags
+    NODE_LAST_SERVICE_BIT = NODE_NETWORK_LIMITED,
+
     // Bits 24-31 are reserved for temporary experiments. Just pick a bit that
     // isn't getting used, or one not being used much, and notify the
     // bitcoin-development mailing list. Remember that service bits are just
diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -887,9 +887,8 @@
 QString formatServicesStr(quint64 mask) {
     QStringList strList;
 
-    // Just scan the last 11 bits for now.
-    for (int i = 0; i < 11; i++) {
-        uint64_t check = 1 << i;
+    // Just scan up to NODE_LAST_SERVICE_BIT for now.
+    for (uint64_t check = 1; check <= NODE_LAST_SERVICE_BIT; check <<= 1) {
         if (mask & check) {
             switch (check) {
                 case NODE_NETWORK: