diff --git a/src/hmi_msg.h b/src/hmi_msg.h
index 3261d63..eb15a51 100644
--- a/src/hmi_msg.h
+++ b/src/hmi_msg.h
@@ -6,14 +6,20 @@
 #define LIBC_VERSION "avr-libc version: "__AVR_LIBC_VERSION_STRING__"\n"
 #define STUD_NAME "Arti Zirk"
 #define GET_MONTH_MSG "Enter Month name first letter >"
-const char ENG_MONTH[6][9] PROGMEM = {
-                                        "January",
-                                        "February",
-                                        "March",
-                                        "April",
-                                        "May",
-                                        "June",
-                                      };
 
-                                            };*/
+const char JANUARY[]  PROGMEM = "January";
+const char FEBRUARY[] PROGMEM = "February";
+const char MARCH[]    PROGMEM = "March";
+const char APRIL[]    PROGMEM = "April";
+const char MAY[]      PROGMEM = "May";
+const char JUNE[]     PROGMEM = "June";
+
+PGM_P const ENG_MONTH[] PROGMEM = {
+                                    JANUARY,
+                                    FEBRUARY,
+                                    MARCH,
+                                    APRIL,
+                                    MAY,
+                                    JUNE,
+                                  };
 #endif /* _HMI_MSG_H_ */
diff --git a/src/main.c b/src/main.c
index 6ccc273..c18e39e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -33,7 +33,7 @@ int main (void)
 
     /* ASCII table print */
     print_ascii_tbl(stdout);
-    unsigned char ascii[128] = {0};
+    unsigned char ascii[128];
     for (unsigned char i = 0; i < sizeof(ascii); i++) {
         ascii[i] = i;
     }
@@ -51,10 +51,10 @@ int main (void)
         fprintf(stdout, "%c\n", month_first_leter);
         lcd_goto(0x40); /* Got to the beginning of the next line */
         for (int i = 0; i < 6; i++) {
-            if (!strncmp_P(&month_first_leter, ENG_MONTH[i], 1)) {
-                fprintf_P(stdout, ENG_MONTH[i]);
+            if (!strncmp_P(&month_first_leter, (PGM_P)pgm_read_word(&ENG_MONTH[i]), 1)) {
+                fprintf_P(stdout, (PGM_P)pgm_read_word(&ENG_MONTH[i]));
                 fputc('\n', stdout);
-                lcd_puts_P(ENG_MONTH[i]);
+                lcd_puts_P((PGM_P)pgm_read_word(&ENG_MONTH[i]));
                 lcd_putc(' ');
             }
         }
diff --git a/src/print_helper.c b/src/print_helper.c
index 69f6d7f..8d1ff5b 100644
--- a/src/print_helper.c
+++ b/src/print_helper.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <avr/pgmspace.h>
 #include "print_helper.h"
 
 int print_ascii_tbl (FILE *stream)
@@ -16,16 +17,17 @@ int print_ascii_tbl (FILE *stream)
 int print_for_human (FILE *stream, const unsigned char *array, const int len)
 {
     for (int i = 0; i < len; i++) {
-        if (array[i] >= ' ' && array[i] <= '~') {
-            if (!fprintf(stream, "%c", array[i])) {
+        unsigned char c = array[i];
+        if (c >= ' ' && c <= '~') {
+            if (!fprintf(stream, "%c", c)) {
                 return 0;
             }
         } else {
-            if (!fprintf(stream, "\"0x%02x\"", array[i])) {
+            if (!fprintf(stream, "\"0x%02x\"", c)) {
                 return 0;
             }
         }
     }
 
-    return fprintf(stream, "\n");;
+    return fprintf(stream, "\n");
 }