diff --git a/arch/arm/src/lc823450/lc823450_mpuinit2.c b/arch/arm/src/lc823450/lc823450_mpuinit2.c
index 51f71aa8ba..f40cc868d3 100644
--- a/arch/arm/src/lc823450/lc823450_mpuinit2.c
+++ b/arch/arm/src/lc823450/lc823450_mpuinit2.c
@@ -39,11 +39,11 @@
  ****************************************************************************/
 
 #ifndef MAX
-#  define MAX(a,b) a > b ? a : b
+#  define MAX(a,b) ((a) > (b) ? (a) : (b))
 #endif
 
 #ifndef MIN
-#  define MIN(a,b) a < b ? a : b
+#  define MIN(a,b) ((a) < (b) ? (a) : (b))
 #endif
 
 /****************************************************************************
diff --git a/arch/arm/src/lc823450/lc823450_procfs_dvfs.c b/arch/arm/src/lc823450/lc823450_procfs_dvfs.c
index bd3e5973c9..8d5d6ce276 100644
--- a/arch/arm/src/lc823450/lc823450_procfs_dvfs.c
+++ b/arch/arm/src/lc823450/lc823450_procfs_dvfs.c
@@ -56,7 +56,7 @@
 #define DVFS_LINELEN  128
 
 #ifndef MIN
-#  define MIN(a,b) (a < b ? a : b)
+#  define MIN(a,b) ((a) < (b) ? (a) : (b))
 #endif
 
 #ifndef CONFIG_SMP_NCPUS
@@ -286,7 +286,8 @@ static ssize_t dvfs_write(FAR struct file *filep, FAR const char *buffer,
   strncpy(line, buffer, n);
   line[n] = '\0';
 
-  n = MIN(strcspn(line, " "), sizeof(cmd) - 1);
+  n = strcspn(line, " ");
+  n = MIN(n, sizeof(cmd) - 1);
   strncpy(cmd, line, n);
   cmd[n] = '\0';
 
diff --git a/arch/arm/src/lc823450/lc823450_serial.c b/arch/arm/src/lc823450/lc823450_serial.c
index 6e83ee14f1..03a06ad82c 100644
--- a/arch/arm/src/lc823450/lc823450_serial.c
+++ b/arch/arm/src/lc823450/lc823450_serial.c
@@ -141,12 +141,8 @@ int g_console_disable;
 #  define HS_DMAACT_ACT2      3
 #endif
 
-#ifndef MAX
-#define MAX(a, b) ((a) > (b) ? a : b)
-#endif
-
 #ifndef MIN
-#define MIN(a, b) ((a) > (b) ? b : a)
+#  define MIN(a, b) ((a) > (b) ? (b) : (a))
 #endif
 
 /****************************************************************************
diff --git a/arch/arm/src/lc823450/lc823450_spi.c b/arch/arm/src/lc823450/lc823450_spi.c
index 2a99d6d9dc..8781c50e97 100644
--- a/arch/arm/src/lc823450/lc823450_spi.c
+++ b/arch/arm/src/lc823450/lc823450_spi.c
@@ -53,7 +53,7 @@
 #endif
 
 #ifndef MIN
-#  define MIN(a, b) ((a) > (b) ? b : a)
+#  define MIN(a, b) ((a) > (b) ? (b) : (a))
 #endif
 
 /****************************************************************************
diff --git a/arch/arm/src/lc823450/lc823450_usbdev.c b/arch/arm/src/lc823450/lc823450_usbdev.c
index 4d603a053e..8c8bd24a7c 100644
--- a/arch/arm/src/lc823450/lc823450_usbdev.c
+++ b/arch/arm/src/lc823450/lc823450_usbdev.c
@@ -75,11 +75,7 @@
 
 #ifndef MIN
 #  define MIN(a, b) ((a) > (b) ? (b) : (a))
-#endif /* MIN */
-
-#ifndef MAX
-#  define MAX(a, b) ((a) > (b) ? (a) : (b))
-#endif /* MIN */
+#endif
 
 #if 0
 #  define DPRINTF(fmt, args...) uinfo(fmt, ##args)