diff --git a/pdf2htmlEX.1.in b/pdf2htmlEX.1.in
index 4deffcc..b0da584 100644
--- a/pdf2htmlEX.1.in
+++ b/pdf2htmlEX.1.in
@@ -123,7 +123,7 @@ If set to 1, glyphs narrower than described in PDF will be strecth; otherwise sp
 .B --squeeze_wide_glyph <0|1> (Default: 0)
 If set to 1, glyphs wider than described in PDF will be squeezed; otherwise it will be truncated.
 .TP
-.B --remove-unused-glyph <0|1> (Default: 0)
+.B --remove-unused-glyph <0|1> (Default: 1)
 [Experimental] If set to 1, remove unused glyphs in embedded fonts in order to reduce the file size.
 .TP
 .B --font-suffix <suffix> (Default: .ttf), --font-format <format> (Default: truetype)
diff --git a/src/pdf2htmlEX.cc b/src/pdf2htmlEX.cc
index 8e7ed0f..09e9f57 100644
--- a/src/pdf2htmlEX.cc
+++ b/src/pdf2htmlEX.cc
@@ -83,7 +83,7 @@ void parse_options (int argc, char **argv)
         .add("space-as-offset", &param.space_as_offset, 0, "treat space characters as offsets")
         .add("stretch_narrow_glyph", &param.stretch_narrow_glyph, 0, "stretch narrow glyphs instead of padding space")
         .add("squeeze-wide-glyph", &param.squeeze_wide_glyph, 0, "squeeze wide glyphs instead of truncating")
-        .add("remove-unused-glyph", &param.remove_unused_glyph, 0, "remove unused glyphs in embedded fonts")
+        .add("remove-unused-glyph", &param.remove_unused_glyph, 1, "remove unused glyphs in embedded fonts")
 
         .add("font-suffix", &param.font_suffix, ".ttf", "suffix for extracted font files")
         .add("font-format", &param.font_format, "opentype", "format for extracted font files")
diff --git a/test/test.py b/test/test.py
index 8daeb38..5526d91 100755
--- a/test/test.py
+++ b/test/test.py
@@ -13,7 +13,7 @@ with open('out.html','w') as outf:
         if not f.lower().endswith('.pdf'):
             continue
         print f
-        if os.system('pdf2htmlEX --dest-dir html --auto-hint=1 --external-hint-tool="ttfautohint" --remove-unused-glyph 0 "%s/%s"' % (DIR,f)) != 0:
+        if os.system('pdf2htmlEX --dest-dir html --auto-hint=1 --external-hint-tool="ttfautohint" --remove-unused-glyph 1 "%s/%s"' % (DIR,f)) != 0:
             print "error on ", f
             sys.exit(-1)