diff --git a/src/node/ui_interface.h b/src/node/ui_interface.h
index 5c7c3e70748..d02238b549f 100644
--- a/src/node/ui_interface.h
+++ b/src/node/ui_interface.h
@@ -25,8 +25,7 @@ class CClientUIInterface
 {
 public:
     /** Flags for CClientUIInterface::ThreadSafeMessageBox */
-    enum MessageBoxFlags
-    {
+    enum MessageBoxFlags : uint32_t {
         ICON_INFORMATION    = 0,
         ICON_WARNING        = (1U << 0),
         ICON_ERROR          = (1U << 1),
diff --git a/test/sanitizer_suppressions/ubsan b/test/sanitizer_suppressions/ubsan
index bcfb1881573..07a440a2906 100644
--- a/test/sanitizer_suppressions/ubsan
+++ b/test/sanitizer_suppressions/ubsan
@@ -66,7 +66,6 @@ implicit-integer-sign-change:compat/stdin.cpp
 implicit-integer-sign-change:compressor.h
 implicit-integer-sign-change:crypto/
 implicit-integer-sign-change:key.cpp
-implicit-integer-sign-change:noui.cpp
 implicit-integer-sign-change:policy/fees.cpp
 implicit-integer-sign-change:prevector.h
 implicit-integer-sign-change:script/bitcoinconsensus.cpp