diff --git a/test_regress/t/uvm/v2017_1_0/dpi/uvm_dpi.h b/test_regress/t/uvm/v2017_1_0/dpi/uvm_dpi.h
index cb809792c..fdf09f577 100644
--- a/test_regress/t/uvm/v2017_1_0/dpi/uvm_dpi.h
+++ b/test_regress/t/uvm/v2017_1_0/dpi/uvm_dpi.h
@@ -32,7 +32,6 @@
 #include "vpi_user.h"
 #include "veriuser.h"
 #include "svdpi.h"
-//#include <malloc.h>
 #include <string.h>
 #include <stdio.h>
 #include <regex.h>
diff --git a/test_regress/t/uvm/v2017_1_0/dpi/uvm_hdl_verilator.c b/test_regress/t/uvm/v2017_1_0/dpi/uvm_hdl_verilator.c
index 7e8d7bd69..2d2c741c9 100644
--- a/test_regress/t/uvm/v2017_1_0/dpi/uvm_hdl_verilator.c
+++ b/test_regress/t/uvm/v2017_1_0/dpi/uvm_hdl_verilator.c
@@ -32,8 +32,8 @@
 #include "svdpi.h"
 #include "vpi_user.h"
 
-#include <stdlib.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 static void m_uvm_error(const char *ID, const char *msg, ...);
diff --git a/test_regress/t/uvm/v2020_3_1/dpi/uvm_dpi.h b/test_regress/t/uvm/v2020_3_1/dpi/uvm_dpi.h
index 44796bfed..73e1c10ae 100644
--- a/test_regress/t/uvm/v2020_3_1/dpi/uvm_dpi.h
+++ b/test_regress/t/uvm/v2020_3_1/dpi/uvm_dpi.h
@@ -42,7 +42,6 @@
 #include "vpi_user.h"
 #include "veriuser.h"
 #include "svdpi.h"
-//#include <malloc.h>
 #include <string.h>
 #include <stdio.h>
 #include <regex.h>
diff --git a/test_regress/t/uvm/v2020_3_1/dpi/uvm_hdl_verilator.c b/test_regress/t/uvm/v2020_3_1/dpi/uvm_hdl_verilator.c
index 7e8d7bd69..2d2c741c9 100644
--- a/test_regress/t/uvm/v2020_3_1/dpi/uvm_hdl_verilator.c
+++ b/test_regress/t/uvm/v2020_3_1/dpi/uvm_hdl_verilator.c
@@ -32,8 +32,8 @@
 #include "svdpi.h"
 #include "vpi_user.h"
 
-#include <stdlib.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 static void m_uvm_error(const char *ID, const char *msg, ...);