diff --git a/tdfsb.c b/tdfsb.c
index 5f6b233..a1af5a1 100644
--- a/tdfsb.c
+++ b/tdfsb.c
@@ -2436,7 +2436,7 @@ int speckey(int key)
 			    if(TDFSB_CSE_FLAG)
 				snprintf(TDFSB_CES_TEMP,4096,TDFSB_CUSTOM_EXECUTE_STRING,fullpath);
 			    else
-	    			snprintf(TDFSB_CES_TEMP,4096,TDFSB_CUSTOM_EXECUTE_STRING);
+	    			snprintf(TDFSB_CES_TEMP,4096,"%s", TDFSB_CUSTOM_EXECUTE_STRING);
 			}
 			system(TDFSB_CES_TEMP);
 			printf("EXECUTE COMMAND: %s\n",TDFSB_CES_TEMP);
@@ -2732,9 +2732,9 @@ int keyboard (unsigned char key)
 
                 else if (key==TDFSB_KC_HELP)
                         {       TDFSB_SHOW_HELP = 1-TDFSB_SHOW_HELP;
-                                if (TDFSB_SHOW_HELP)    {       printf("\n=======================================\n");
-                                                                printf(help_str);
-                                                                printf("=======================================\n\n");
+                                if (TDFSB_SHOW_HELP)    {       printf("%s", "\n=======================================\n");
+                                                                printf("%s", help_str);
+                                                                printf("%s", "=======================================\n\n");
                                                         }
                         }