diff --git a/cjpeg.c b/cjpeg.c
index 7002ddd5..20382e8f 100644
--- a/cjpeg.c
+++ b/cjpeg.c
@@ -160,10 +160,10 @@ usage (void)
   fprintf(stderr, "  -grayscale     Create monochrome JPEG file\n");
   fprintf(stderr, "  -rgb           Create RGB JPEG file\n");
 #ifdef ENTROPY_OPT_SUPPORTED
-  fprintf(stderr, "  -optimize      Optimize Huffman table (smaller file, but slow compression)\n");
+  fprintf(stderr, "  -optimize      Optimize Huffman table (smaller file, but slow compression, enabled by default)\n");
 #endif
 #ifdef C_PROGRESSIVE_SUPPORTED
-  fprintf(stderr, "  -progressive   Create progressive JPEG file\n");
+  fprintf(stderr, "  -progressive   Create progressive JPEG file (enabled by default)\n");
 #endif
 #ifdef TARGA_SUPPORTED
   fprintf(stderr, "  -targa         Input file is Targa format (usually not needed)\n");
diff --git a/jpegtran.c b/jpegtran.c
index 1d961b80..b8ff0270 100644
--- a/jpegtran.c
+++ b/jpegtran.c
@@ -64,10 +64,10 @@ usage (void)
   fprintf(stderr, "  -copy comments Copy only comment markers (default)\n");
   fprintf(stderr, "  -copy all      Copy all extra markers\n");
 #ifdef ENTROPY_OPT_SUPPORTED
-  fprintf(stderr, "  -optimize      Optimize Huffman table (smaller file, but slow compression)\n");
+  fprintf(stderr, "  -optimize      Optimize Huffman table (smaller file, but slow compression, enabled by default)\n");
 #endif
 #ifdef C_PROGRESSIVE_SUPPORTED
-  fprintf(stderr, "  -progressive   Create progressive JPEG file\n");
+  fprintf(stderr, "  -progressive   Create progressive JPEG file (enabled by default)\n");
 #endif
   fprintf(stderr, "  -revert        Revert to standard defaults (instead of mozjpeg defaults)\n");
   fprintf(stderr, "  -fastcrush     Disable progressive scan optimization\n");