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 6ccee7da5..cb809792c 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 +32,7 @@
 #include "vpi_user.h"
 #include "veriuser.h"
 #include "svdpi.h"
-#include <malloc.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 41b798f62..7e8d7bd69 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
@@ -32,7 +32,7 @@
 #include "svdpi.h"
 #include "vpi_user.h"
 
-#include <malloc.h>
+#include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 
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 4e3dcf4ab..44796bfed 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 +42,7 @@
 #include "vpi_user.h"
 #include "veriuser.h"
 #include "svdpi.h"
-#include <malloc.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 41b798f62..7e8d7bd69 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
@@ -32,7 +32,7 @@
 #include "svdpi.h"
 #include "vpi_user.h"
 
-#include <malloc.h>
+#include <stdlib.h>
 #include <stdio.h>
 #include <string.h>