diff --git a/testsuite/tests/pmcheck/should_compile/all.T b/testsuite/tests/pmcheck/should_compile/all.T
index 3bd4118bd5756c4b3fc193a93aaa7cc8e956068e..9278fde53e8ee506694800bc5ad39fe272efb1bd 100644
--- a/testsuite/tests/pmcheck/should_compile/all.T
+++ b/testsuite/tests/pmcheck/should_compile/all.T
@@ -22,7 +22,7 @@ test('T7669a', only_compiler_types(['ghc']), compile, ['-fwarn-incomplete-patter
 test('T8970', only_compiler_types(['ghc']), compile, ['-fwarn-incomplete-patterns -fwarn-overlapping-patterns'])
 test('T9951b',only_compiler_types(['ghc']), compile, ['-fwarn-incomplete-patterns -fwarn-overlapping-patterns'])
 test('T9951', only_compiler_types(['ghc']), compile, ['-fwarn-incomplete-patterns -fwarn-overlapping-patterns'])
-test('T11303', normal, compile, ['-fwarn-incomplete-patterns -fwarn-overlapping-patterns'])
+test('T11303', normal, compile, ['-fwarn-incomplete-patterns -fwarn-overlapping-patterns +RTS -M1G -RTS'])
 
 # Other tests
 test('pmc001', only_compiler_types(['ghc']), compile, ['-fwarn-incomplete-patterns -fwarn-overlapping-patterns'])