diff --git a/testsuite/tests/codeGen/should_run/all.T b/testsuite/tests/codeGen/should_run/all.T
index 0882f2b6050cf5395c5f50d10a3a096b8303df64..f473ac523ee67e909517c636a5d2e50da27b44d8 100644
--- a/testsuite/tests/codeGen/should_run/all.T
+++ b/testsuite/tests/codeGen/should_run/all.T
@@ -194,9 +194,11 @@ test('T15696_3', normal, compile_and_run, ['-O'])
 
 test('T15892',
      [ ignore_stdout,
-        # we want to do lots of major GC to make the bug more likely to
-        # happen, so -G1 -A32k:
-        extra_run_opts('+RTS -G1 -A32k -RTS') ],
+       # -G1 is unsupported by the nonmoving GC
+       omit_ways(['nonmoving', 'nonmoving_thr']),
+       # we want to do lots of major GC to make the bug more likely to
+       # happen, so -G1 -A32k:
+       extra_run_opts('+RTS -G1 -A32k -RTS') ],
      compile_and_run, ['-O'])
 test('T16617', normal, compile_and_run, [''])
 test('T16449_2', exit_code(0), compile_and_run, [''])