diff --git a/src/test/scala/constellation/NocTests.scala b/src/test/scala/constellation/NocTests.scala
index 29bedeb..5b5ffb4 100644
--- a/src/test/scala/constellation/NocTests.scala
+++ b/src/test/scala/constellation/NocTests.scala
@@ -2,7 +2,7 @@ package constellation
 
 import chipsalliance.rocketchip.config.{Config, Parameters}
 import chiseltest._
-import chiseltest.simulator.{VerilatorFlags, VerilatorCFlags}
+import chiseltest.simulator.{VerilatorFlags, VerilatorCFlags, SimulatorDebugAnnotation, VerilatorLinkFlags}
 import org.scalatest.flatspec.AnyFlatSpec
 import chisel3._
 import constellation.test._
@@ -37,14 +37,19 @@ abstract class BaseNoCTest(
     it should s"pass test with config ${config.getClass.getName}" in {
       implicit val p: Parameters = config
       test(gen(p))
-      .withAnnotations(Seq(
-        VerilatorBackendAnnotation,
-        VerilatorFlags(extraVerilatorFlags),
-        VerilatorCFlags(Seq(
-          "-DNO_VPI",
-          "-fpermissive"))
-      ))
-      .runUntilStop(timeout = 1000 * 1000)
+        .withAnnotations(Seq(
+          SimulatorDebugAnnotation,
+          VerilatorBackendAnnotation,
+          VerilatorFlags(extraVerilatorFlags),
+          VerilatorLinkFlags(Seq(
+            "-Wl,--allow-multiple-definition",
+            "-fcommon")),
+          VerilatorCFlags(Seq(
+            "-DNO_VPI",
+            "-fcommon",
+            "-fpermissive"))
+        ))
+        .runUntilStop(timeout = 1000 * 1000)
     }
   }
 }