--- a/flint/flint.cpp
+++ b/flint/flint.cpp
@@ -117,7 +117,7 @@ void usage(bool full = false)
 
 
 
-    const char *descr =
+    const char descr[] =
 #ifdef FOR_MAN
     ".TH \"flint\" \"\" \"Mar 2013\" \"MFT 3.0.0\" \"Administration\"\n"
     MAN_SH("NAME")
@@ -371,7 +371,7 @@ MAN_BR
 
 
 
-    const char* full_descr =
+    const char full_descr[] =
     "\n"
     MAN_SS("COMMAND DESCRIPTION")
     "\n"
@@ -1747,7 +1747,7 @@ int main(int ac, char *av[])
                 } else {
                     sprintf(curr_ver, "N/A");
                 }
-                printf(curr_ver); printf("\n");
+                printf("%s\n", curr_ver);
 
                 printf("    New FW version:               ");
                 if (fileInfo.infoOffs[Operations::II_FwVersion]) {
@@ -1755,7 +1755,7 @@ int main(int ac, char *av[])
                 } else {
                     sprintf(new_ver, "N/A");
                 }
-                printf(new_ver); printf("\n");
+                printf("%s\n", new_ver);
 
                 print_line_to_log("Current FW version on flash: %s,  New FW version: %s\n", curr_ver, new_ver);
 
--- a/flint/flint_ops.cpp
+++ b/flint/flint_ops.cpp
@@ -353,7 +353,7 @@ bool Operations::CntxFailSafeBurn(Flash&    f,
     if (pre_message == NULL) {
         sprintf(message, "Burning FW image without signatures");
     } else {
-        sprintf(message, pre_message);
+        sprintf(message, "%s", pre_message);
     }
     int str_len = strlen(message), restore_len = strlen(RESTORING_MSG);
     str_len = (restore_len > str_len) ? restore_len : str_len;
@@ -1602,7 +1602,7 @@ bool Operations::BurnFs3Image(Flash& f, FImage& fim, bool need_report)
          if (pre_message == NULL) {
              sprintf(message, "Burning FW image without signatures");
          } else {
-             sprintf(message, pre_message);
+             sprintf(message, "%s", pre_message);
          }
          int str_len = strlen(message), restore_len = strlen(RESTORING_MSG);
          str_len = (restore_len > str_len) ? restore_len : str_len;
@@ -2051,7 +2051,7 @@ bool Operations::Verify(FBase& f, Operations::ImageInfo* info, bool both_images,
 
 bool Operations::GetExpRomVersionWrapper(ImageInfo* info) {
     if (!GetExpRomVersion(info)) {
-        snprintf(info->expRomErrMsg, MAX_ROM_ERR_MSG_LEN, err());
+        snprintf(info->expRomErrMsg, MAX_ROM_ERR_MSG_LEN, "%s", err());
         info->expRomErrMsgValid = true;
     }
     return true;
@@ -2288,7 +2288,7 @@ bool Operations::LoadAsExpRom (FBase& f, ImageInfo* info) {
     info->_rom_sect.clear();
     info->_rom_sect.resize(f.get_size());
     if (!f.read(0, &info->_rom_sect[0], f.get_size()))
-        return errmsg(f.err());
+        return errmsg("%s", f.err());
 
     TOCPUn(&info->_rom_sect[0], info->_rom_sect.size()/4);
 
@@ -4034,7 +4034,7 @@ bool Operations::CheckDevImageAndRom(FBase& f, ImageInfo& flash_info)
 {
     // Common check for the ROM.
     if (!CheckDevImage(f, flash_info, 1)) {
-        return errmsg(err());
+        return errmsg("%s", err());
     }
     if (IsRomEmpty(&flash_info)) {
         return errmsg("Read ROM failed: The FW does not contain a ROM section");
@@ -4055,7 +4055,7 @@ bool Operations::IntegrateDevRomInImage(FImage& fim, ImageInfo& flashInfo, Image
     // Compine the image and the rom into new daa
     if(!UpdateRomInImage((u_int8_t*)(&new_data[0]), (u_int8_t*)(fim.getBuf()),
                          (u_int8_t*)(&flashInfo._rom_sect[0]), rom_size, &actual_image_size)) {
-        return errmsg(err());
+        return errmsg("%s", err());
     }
 
     // close old image and open new image with the rom.
@@ -4063,7 +4063,7 @@ bool Operations::IntegrateDevRomInImage(FImage& fim, ImageInfo& flashInfo, Image
     fim.open((u_int32_t*)(&new_data[0]), actual_image_size);
 
     if (!VerifyFs2(fim, &fileInfo, false, false, true) || !QueryAll(fim, &fileInfo)) {
-        return errmsg(err());
+        return errmsg("%s", err());
     }
 
     return true;
--- a/small_utils/mtserver.c
+++ b/small_utils/mtserver.c
@@ -149,7 +149,7 @@ int port = DEF_PORT;    /* Default port */
     #define FILE_SIZE (NUM_INTS * sizeof(int))
 
 u_int32_t* cr_space;
-char sim_str[100] = "\t-i[d]  <id>   - set the device id.\n";
+const char sim_str[100] = "\t-i[d]  <id>   - set the device id.\n";
 int id;
 int fd;
 mfile *mopen(const char *name)
@@ -297,7 +297,7 @@ int unmap_and_close_file(void)
 }
 #else
 
-char sim_str[100] = "";
+const char sim_str[100] = "";
 int check_id_arg(char* av[], int ac, int *i)
 {
     ac = 0;