diff --git a/test_regress/t/t_vpi_module.cpp b/test_regress/t/t_vpi_module.cpp
index 0d9922f51..6f76bd5a6 100644
--- a/test_regress/t/t_vpi_module.cpp
+++ b/test_regress/t/t_vpi_module.cpp
@@ -80,6 +80,10 @@ void modDump(const TestVpiHandle& it, int n) {
 
 extern "C" {
 int mon_check() {
+#ifdef TEST_VERBOSE
+    printf("-mon_check()\n");
+#endif
+
     TestVpiHandle it = vpi_iterate(vpiModule, NULL);
     CHECK_RESULT_NZ(it);
     // Uncomment to see what other simulators return
diff --git a/test_regress/t/t_vpi_module.v b/test_regress/t/t_vpi_module.v
index 3ef25ea4b..8d29e6622 100644
--- a/test_regress/t/t_vpi_module.v
+++ b/test_regress/t/t_vpi_module.v
@@ -43,10 +43,10 @@ extern "C" int mon_check();
       status = $c32("mon_check()");
 `endif
 `ifdef IVERILOG
-     status = $mon_check();
+      status = $mon_check();
 `endif
 `ifndef USE_VPI_NOT_DPI
-     status = mon_check();
+      status = mon_check();
 `endif
       if (status!=0) begin
          $write("%%Error: t_vpi_module.cpp:%0d: C Test failed\n", status);
diff --git a/test_regress/t/t_vpi_var.cpp b/test_regress/t/t_vpi_var.cpp
index b8af76d23..e33072b2f 100644
--- a/test_regress/t/t_vpi_var.cpp
+++ b/test_regress/t/t_vpi_var.cpp
@@ -633,6 +633,10 @@ int _mon_check_vlog_info() {
 
 int mon_check() {
     // Callback from initial block in monitor
+#ifdef TEST_VERBOSE
+    printf("-mon_check()\n");
+#endif
+
     if (int status = _mon_check_mcd()) return status;
     if (int status = _mon_check_callbacks()) return status;
     if (int status = _mon_check_value_callbacks()) return status;
diff --git a/test_regress/t/t_vpi_var.v b/test_regress/t/t_vpi_var.v
index 88c9612a6..ea2345b87 100644
--- a/test_regress/t/t_vpi_var.v
+++ b/test_regress/t/t_vpi_var.v
@@ -60,10 +60,10 @@ extern "C" int mon_check();
       status = $c32("mon_check()");
 `endif
 `ifdef IVERILOG
-     status = $mon_check();
+      status = $mon_check();
 `endif
 `ifndef USE_VPI_NOT_DPI
-     status = mon_check();
+      status = mon_check();
 `endif
       if (status!=0) begin
 	 $write("%%Error: t_vpi_var.cpp:%0d: C Test failed\n", status);