diff --git a/testsuite/config/ghc b/testsuite/config/ghc
index 24294da1199736ffc5b370102c29f35ec3228997..a617fe2dc801c69fe6fd8e3875d35ee43fce42ec 100644
--- a/testsuite/config/ghc
+++ b/testsuite/config/ghc
@@ -115,10 +115,10 @@ config.way_rts_flags = {
     'sanity'       : ['-DS'],
     'threaded1'    : [],
     'threaded1_ls' : ['-ls'],
-    'threaded2'    : ['-N2 -ls'],
+    'threaded2'    : ['-N2', '-ls'],
     'threaded2_hT' : ['-N2', '-hT'],
     'hpc'          : [],
-    'prof_hc_hb'   : ['-hc -hbvoid'],
+    'prof_hc_hb'   : ['-hc', '-hbvoid'],
     'prof_hb'      : ['-hb'],
     'prof_hd'      : ['-hd'],
     'prof_hy'      : ['-hy'],
@@ -144,6 +144,11 @@ prof_ways     = [x[0] for x in config.way_flags.items()
 threaded_ways = [x[0] for x in config.way_flags.items()
                       if '-threaded' in x[1] or 'ghci' == x[0]]
 
+# Ways which run with multiple capabilities
+concurrent_ways = [name for name, flags in config.way_flags.items()
+                        if '-threaded' in flags or 'ghci' == name
+                        if '-N2' in config.way_rts_flags.get(name, [])]
+
 opt_ways      = [x[0] for x in config.way_flags.items()
                       if '-O' in x[1]]
 
diff --git a/testsuite/tests/concurrent/should_run/all.T b/testsuite/tests/concurrent/should_run/all.T
index dbeb1a6a49387cf7eb5ce147c20b5fabcc9f47e3..d770b4d5934c68e8c8aac9b7362aadfd96cbdfb4 100644
--- a/testsuite/tests/concurrent/should_run/all.T
+++ b/testsuite/tests/concurrent/should_run/all.T
@@ -17,8 +17,8 @@ test('conc069a', only_threaded_ways, compile_and_run, [''])
 # those for now.
 test('conc070', only_threaded_ways, compile_and_run, [''])
 
-test('conc071', omit_ways(['threaded2']), compile_and_run, [''])
-test('conc072', only_ways(['threaded2']), compile_and_run, [''])
+test('conc071', omit_ways(concurrent_ways), compile_and_run, [''])
+test('conc072', only_ways(concurrent_ways), compile_and_run, [''])
 test('conc073', normal, compile_and_run, [''])
 
 # vector code must get inlined to become non-allocating
@@ -67,7 +67,7 @@ test('allowinterrupt001', normal, compile_and_run, [''])
 
 # try hard to provoke the error by running the test 100 times
 test('T5558',
-     [ only_ways(['threaded2']),
+     [ only_ways(concurrent_ways),
        cmd_wrapper(
          lambda c: "for i in %s; do %s || break; done"  %
            (" ".join(str(i) for i in range(1,101)), c)) ],
@@ -88,7 +88,7 @@ test('T7970', normal, compile_and_run, [''])
 test('AtomicPrimops', normal, compile_and_run, [''])
 
 # test uses 2 threads and yield, scheduling can vary with threaded2
-test('threadstatus-9333', [fragile_for(16555, ['ghci']), omit_ways(['threaded2'])], compile_and_run, [''])
+test('threadstatus-9333', [fragile_for(16555, ['ghci']), omit_ways(concurrent_ways)], compile_and_run, [''])
 
 test('T9379', normal, compile_and_run, [''])
 
@@ -132,7 +132,7 @@ test('conc013', normal, compile_and_run, [''])
 test('conc014', normal, compile_and_run, [''])
 test('conc015', normal, compile_and_run, [''])
 test('conc015a', normal, compile_and_run, [''])
-test('conc016', omit_ways(['threaded2']), # see comment in conc016.hs
+test('conc016', omit_ways(concurrent_ways), # see comment in conc016.hs
                 compile_and_run, [''])
 test('conc017', normal, compile_and_run, [''])
 test('conc017a', normal, compile_and_run, [''])