diff --git a/include/riscv_defines.sv b/include/riscv_defines.sv
index 4418641c..0c16cc43 100644
--- a/include/riscv_defines.sv
+++ b/include/riscv_defines.sv
@@ -29,7 +29,7 @@
 // no traces for synthesis, they are not synthesizable
 `ifndef SYNTHESIS
 `define TRACE_EXECUTION
-`define SIMCHECKER
+//`define SIMCHECKER
 `endif