diff --git a/roottest/root/meta/naming/execResolveTypedef.cxx b/roottest/root/meta/naming/execResolveTypedef.cxx
index 8064b68538070..034021f561c09 100644
--- a/roottest/root/meta/naming/execResolveTypedef.cxx
+++ b/roottest/root/meta/naming/execResolveTypedef.cxx
@@ -1,5 +1,7 @@
 #include <stdio.h>
 #include <TClassEdit.h>
+#include <TClass.h>
+#include <cstdint>
 
 // See also roottest/meta/naming/execCheckNaming.C
 
@@ -12,6 +14,20 @@
 
 namespace A1 { namespace B2 { namespace C3 { typedef int what; } } }
 namespace NS { typedef int IntNS_t; }
+namespace SG { typedef std::uint32_t sgkey_t; }
+namespace RT {
+namespace EX {
+struct ClusterSize {
+   using ValueType = std::uint64_t;
+   ValueType fValue;
+};
+using ClusterSize_t = ClusterSize;
+}
+}
+
+struct PackedParameters {
+   SG::sgkey_t  m_sgkey;
+};
 
 class Object
 {
@@ -207,5 +223,9 @@ int execResolveTypedef()
    testing("::int",TClassEdit::ResolveTypedef("::Int_t"));
    // Add an example like pair<...::type_t,int>
 
+   testing("unsigned int", TClassEdit::ResolveTypedef("SG::sgkey_t"));
+   testing("unsigned int", TClass::GetClass("PackedParameters")->GetDataMember("m_sgkey")->GetTrueTypeName());
+   testing("SG::sgkey_t", TClass::GetClass("PackedParameters")->GetDataMember("m_sgkey")->GetFullTypeName());
+   testing("RT::EX::ClusterSize", TClassEdit::ResolveTypedef("RT::EX::ClusterSize_t"));
    return 0;
 }
diff --git a/roottest/root/meta/naming/execResolveTypedef.ref b/roottest/root/meta/naming/execResolveTypedef.ref
index 9c4ccb3d24bb4..888d0a0881773 100644
--- a/roottest/root/meta/naming/execResolveTypedef.ref
+++ b/roottest/root/meta/naming/execResolveTypedef.ref
@@ -84,4 +84,8 @@ Test 80 The result is correct: ::int
 Test 81 The result is correct: ::Unknown
 Test 82 The result is correct: ::SomeTypedefName_tSF
 Test 83 The result is correct: ::int
+Test 84 The result is correct: unsigned int
+Test 85 The result is correct: unsigned int
+Test 86 The result is correct: SG::sgkey_t
+Test 87 The result is correct: RT::EX::ClusterSize
 (int) 0