diff --git a/configs/heavy_tests.json b/configs/heavy_tests.json
index eab85e5..a45be52 100644
--- a/configs/heavy_tests.json
+++ b/configs/heavy_tests.json
@@ -59,6 +59,6 @@
     "procOMC":0,
     "procCCompile":0,
     "optlevel":"-O0 -march=native",
-    "extraCustomCommands":["setCommandLineOptions(\"--newBackend -d=mergeComponents --generateDynamicJacobian=symbolic\")"]
+    "extraCustomCommands":["setCommandLineOptions(\"--newBackend -d=mergeComponents --generateDynamicJacobian=symbolic --maxSizeNonlinearTearing=400\")"]
   }
 ]