diff --git a/CHANGELOG.md b/CHANGELOG.md
index 02ad017..54cb731 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ this project uses date-based 'snapshot' version identifiers.
 
 ## [Unreleased]
 
+### Added
+- Switch `-s|--stdengine` to run a set of tests only with the standard engine
+  even where this varies between configs (issue \#343)
 ## [2024-01-09]
 
 ### Fixed
diff --git a/l3build-arguments.lua b/l3build-arguments.lua
index 800ea89..7304fdc 100644
--- a/l3build-arguments.lua
+++ b/l3build-arguments.lua
@@ -150,6 +150,12 @@ option_list =
         desc  = "Shuffles order of tests",
         type  = "boolean"
       },
+    stdengine =
+      {
+        desc  = "Run tests only with the standard engine",
+        short = "s",
+        type  = "boolean"
+      },
     texmfhome =
       {
         desc = "Location of user texmf tree",
diff --git a/l3build-check.lua b/l3build-check.lua
index 3542bce..78e74c0 100644
--- a/l3build-check.lua
+++ b/l3build-check.lua
@@ -595,7 +595,9 @@ function runcheck(name, hide)
     return 1
   end
   local checkengines = checkengines
-  if options["engine"] then
+  if options["stdengine"] then
+    checkengines = {stdengine}
+  elseif options["engine"] then
     checkengines = options["engine"]
   end
   local failedengines = {}
diff --git a/l3build.1 b/l3build.1
index 5c2154c..ba1b39b 100644
--- a/l3build.1
+++ b/l3build.1
@@ -77,6 +77,8 @@ Shows the full log of the failure with 'halt-on-error'
 Shows the invocation to update failing .tlg files
 .IP --shuffle
 Shuffles order of tests
+.IP --stdengine|-s
+Run tests only with the standard engine
 .IP --texmfhome
 Location of user texmf tree
 .IP --version