1 files changed, 3 insertions, 3 deletions

diff --git a/coreutils/diff.c b/coreutils/diff.c
index 65757d7d1..2915d4009 100644
--- a/coreutils/diff.c
+++ b/coreutils/diff.c
@@ -1202,7 +1202,7 @@ int diff_main(int argc, char **argv)
          * driver routine.  Both drivers use the contents of stb1 and stb2.
          */
         if (argc < 2) {
-                bb_error_msg("Missing filename");
+                bb_error_msg("missing filename");
                 bb_show_usage();
         }
         if (strcmp(argv[0], "-") == 0) {
@@ -1216,12 +1216,12 @@ int diff_main(int argc, char **argv)
         } else
                 xstat(argv[1], &stb2);
         if (gotstdin && (S_ISDIR(stb1.st_mode) || S_ISDIR(stb2.st_mode)))
-                bb_error_msg_and_die("Can't compare - to a directory");
+                bb_error_msg_and_die("can't compare - to a directory");
         if (S_ISDIR(stb1.st_mode) && S_ISDIR(stb2.st_mode)) {
 #if ENABLE_FEATURE_DIFF_DIR
                 diffdir(argv[0], argv[1]);
 #else
-                bb_error_msg_and_die("Directory comparison not supported");
+                bb_error_msg_and_die("directory comparison not supported");
 #endif
         } else {
                 if (S_ISDIR(stb1.st_mode)) {