diff --git a/test_regress/t/t_vpi_memory.cpp b/test_regress/t/t_vpi_memory.cpp
index 09ff0af06..aded57047 100644
--- a/test_regress/t/t_vpi_memory.cpp
+++ b/test_regress/t/t_vpi_memory.cpp
@@ -256,7 +256,7 @@ int main(int argc, char** argv) {
     uint64_t sim_time = 1100;
     contextp->debug(0);
     contextp->commandArgs(argc, argv);
-    // we're going to be checking for these errors do don't crash out
+    // We're going to be checking for these errors so don't crash out
     contextp->fatalOnVpiError(0);
 
     const std::unique_ptr<VM_PREFIX> topp{new VM_PREFIX{contextp.get(),
diff --git a/test_regress/t/t_vpi_module.cpp b/test_regress/t/t_vpi_module.cpp
index 7a40a9374..955464d11 100644
--- a/test_regress/t/t_vpi_module.cpp
+++ b/test_regress/t/t_vpi_module.cpp
@@ -177,7 +177,7 @@ int main(int argc, char** argv) {
     uint64_t sim_time = 1100;
     contextp->debug(0);
     contextp->commandArgs(argc, argv);
-    // we're going to be checking for these errors do don't crash out
+    // We're going to be checking for these errors so don't crash out
     contextp->fatalOnVpiError(0);
 
     {
diff --git a/test_regress/t/t_vpi_param.cpp b/test_regress/t/t_vpi_param.cpp
index 12feae1fd..8d769ae26 100644
--- a/test_regress/t/t_vpi_param.cpp
+++ b/test_regress/t/t_vpi_param.cpp
@@ -245,7 +245,7 @@ int main(int argc, char** argv) {
     uint64_t sim_time = 1100;
     contextp->debug(0);
     contextp->commandArgs(argc, argv);
-    // we're going to be checking for these errors do don't crash out
+    // We're going to be checking for these errors so don't crash out
     contextp->fatalOnVpiError(0);
 
     const std::unique_ptr<VM_PREFIX> topp{new VM_PREFIX{contextp.get(),
diff --git a/test_regress/t/t_vpi_unimpl.cpp b/test_regress/t/t_vpi_unimpl.cpp
index da925d42b..7c7f17cdf 100644
--- a/test_regress/t/t_vpi_unimpl.cpp
+++ b/test_regress/t/t_vpi_unimpl.cpp
@@ -189,7 +189,7 @@ int main(int argc, char** argv) {
     uint64_t sim_time = 1100;
     contextp->commandArgs(argc, argv);
     // contextp->debug(9);
-    // we're going to be checking for these errors do don't crash out
+    // We're going to be checking for these errors so don't crash out
     contextp->fatalOnVpiError(0);
 
     const std::unique_ptr<VM_PREFIX> topp{new VM_PREFIX{contextp.get(),