diff --git a/doc/fontconfig-user.sgml b/doc/fontconfig-user.sgml
index b54ba7a..482b453 100644
--- a/doc/fontconfig-user.sgml
+++ b/doc/fontconfig-user.sgml
@@ -473,8 +473,8 @@ symbolic names for common font values:
   extralight      weight          40
   ultralight      weight          40
   light           weight          50
-  demilight       weight          65
-  semilight       weight          65
+  demilight       weight          55
+  semilight       weight          55
   book            weight          75
   regular         weight          80
   normal          weight          80
diff --git a/fontconfig/fontconfig.h b/fontconfig/fontconfig.h
index 1f26cb4..af027f0 100644
--- a/fontconfig/fontconfig.h
+++ b/fontconfig/fontconfig.h
@@ -131,7 +131,7 @@ typedef int		FcBool;
 #define FC_WEIGHT_EXTRALIGHT	    40
 #define FC_WEIGHT_ULTRALIGHT	    FC_WEIGHT_EXTRALIGHT
 #define FC_WEIGHT_LIGHT		    50
-#define FC_WEIGHT_DEMILIGHT	    65
+#define FC_WEIGHT_DEMILIGHT	    55
 #define FC_WEIGHT_SEMILIGHT	    FC_WEIGHT_DEMILIGHT
 #define FC_WEIGHT_BOOK		    75
 #define FC_WEIGHT_REGULAR	    80