diff --git a/lib/libimhex/source/api/imhex_api.cpp b/lib/libimhex/source/api/imhex_api.cpp
index 146aa9a52..769d359d8 100644
--- a/lib/libimhex/source/api/imhex_api.cpp
+++ b/lib/libimhex/source/api/imhex_api.cpp
@@ -749,13 +749,14 @@ namespace hex {
                     DSROLE_PRIMARY_DOMAIN_INFO_BASIC * info;
                     if ((DsRoleGetPrimaryDomainInformation(NULL, DsRolePrimaryDomainInfoBasic, (PBYTE *)&info) == ERROR_SUCCESS) && (info != nullptr))
                     {
-                        bool result = std::wstring(info->DomainNameFlat).empty();
+                        bool result = std::wstring(info->DomainNameFlat) != L"WORKGROUP";
                         DsRoleFreeMemory(info);
 
                         return result;
                     } else {
-                        DWORD size = 1024;
-                        ::GetComputerNameExA(ComputerNameDnsDomain, nullptr, &size);
+                        DWORD size = 128;
+                        char buffer[128];
+                        ::GetComputerNameExA(ComputerNameDnsDomain, buffer, &size);
                         return size > 0;
                     }
                 }