diff --git a/mtest0.c b/mtest0.c
index c09019f1..aec9ae85 100644
--- a/mtest0.c
+++ b/mtest0.c
@@ -21,6 +21,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #include <pthread.h>
diff --git a/mtest1.c b/mtest1.c
index ffe79123..5ef53310 100644
--- a/mtest1.c
+++ b/mtest1.c
@@ -20,6 +20,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
diff --git a/mtest2.c b/mtest2.c
index 12b1e126..81f8bf3c 100644
--- a/mtest2.c
+++ b/mtest2.c
@@ -23,6 +23,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
diff --git a/mtest3.c b/mtest3.c
index a55ec604..ab5c28c1 100644
--- a/mtest3.c
+++ b/mtest3.c
@@ -23,6 +23,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
diff --git a/mtest4.c b/mtest4.c
index 3d67a0f9..0e7536d6 100644
--- a/mtest4.c
+++ b/mtest4.c
@@ -23,6 +23,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
diff --git a/mtest5.c b/mtest5.c
index ed19f412..d5e04306 100644
--- a/mtest5.c
+++ b/mtest5.c
@@ -23,6 +23,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
diff --git a/mtest6.c b/mtest6.c
index d988c93c..7d76daee 100644
--- a/mtest6.c
+++ b/mtest6.c
@@ -23,6 +23,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
diff --git a/mtest7.c b/mtest7.c
index 0e15bc9e..991418c6 100644
--- a/mtest7.c
+++ b/mtest7.c
@@ -18,6 +18,7 @@
 #include <string.h>
 #include <time.h>
 #include <sys/time.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
diff --git a/mtest8.c b/mtest8.c
index f5895628..d4b7bd7b 100644
--- a/mtest8.c
+++ b/mtest8.c
@@ -18,6 +18,7 @@
 #include <string.h>
 #include <time.h>
 #include <sys/time.h>
+#include <sys/sysmacros.h>
 #include "mdbx.h"
 
 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)