diff --git a/ba-dua-agent-rt/src/main/java/br/usp/each/saeg/badua/agent/rt/internal/PreMain.java b/ba-dua-agent-rt/src/main/java/br/usp/each/saeg/badua/agent/rt/internal/PreMain.java
index cd4bffc..25dded6 100644
--- a/ba-dua-agent-rt/src/main/java/br/usp/each/saeg/badua/agent/rt/internal/PreMain.java
+++ b/ba-dua-agent-rt/src/main/java/br/usp/each/saeg/badua/agent/rt/internal/PreMain.java
@@ -22,10 +22,8 @@ private PreMain() {
     }
 
     public static void premain(final String opts, final Instrumentation inst) throws Exception {
-        final IRuntime runtime = Boolean.getBoolean("badua.experimental.ModifiedSystemClassRuntime")
-                ? ModifiedSystemClassRuntime.createFor(inst, "java/lang/UnknownError")
-                : new RT();
-
+        final IRuntime runtime = Boolean.getBoolean("badua.experimental.RT") ? new RT()
+                : ModifiedSystemClassRuntime.createFor(inst, "java/lang/UnknownError");
         runtime.startup(Agent.getInstance().getData());
         inst.addTransformer(new CoverageTransformer(runtime, PreMain.class.getPackage().getName()));
     }
diff --git a/ba-dua-agent-rt/src/main/java/br/usp/each/saeg/badua/agent/rt/internal/RT.java b/ba-dua-agent-rt/src/main/java/br/usp/each/saeg/badua/agent/rt/internal/RT.java
index 50c4e69..51f744f 100644
--- a/ba-dua-agent-rt/src/main/java/br/usp/each/saeg/badua/agent/rt/internal/RT.java
+++ b/ba-dua-agent-rt/src/main/java/br/usp/each/saeg/badua/agent/rt/internal/RT.java
@@ -14,6 +14,7 @@
 import br.usp.each.saeg.badua.core.runtime.RuntimeData;
 import br.usp.each.saeg.badua.core.runtime.StaticAccessGenerator;
 
+@Deprecated
 public final class RT extends StaticAccessGenerator implements IRuntime {
 
     private static RuntimeData DATA;