Mark more parameters FC_UNUSED
diff --git a/src/fccfg.c b/src/fccfg.c
index 8c246c0..4f38af1 100644
--- a/src/fccfg.c
+++ b/src/fccfg.c
@@ -572,35 +572,35 @@
 }
 
 void
-FcBlanksDestroy (FcBlanks *b)
+FcBlanksDestroy (FcBlanks *b FC_UNUSED)
 {
     /* Deprecated. */
 }
 
 FcBool
-FcBlanksAdd (FcBlanks *b, FcChar32 ucs4)
+FcBlanksAdd (FcBlanks *b FC_UNUSED, FcChar32 ucs4 FC_UNUSED)
 {
     /* Deprecated. */
     return FcFalse;
 }
 
 FcBool
-FcBlanksIsMember (FcBlanks *b, FcChar32 ucs4)
+FcBlanksIsMember (FcBlanks *b FC_UNUSED, FcChar32 ucs4 FC_UNUSED)
 {
     /* Deprecated. */
     return FcFalse;
 }
 
 FcBlanks *
-FcConfigGetBlanks (FcConfig	*config)
+FcConfigGetBlanks (FcConfig	*config FC_UNUSED)
 {
     /* Deprecated. */
     return NULL;
 }
 
 FcBool
-FcConfigAddBlank (FcConfig	*config,
-		  FcChar32    	blank)
+FcConfigAddBlank (FcConfig	*config FC_UNUSED,
+		  FcChar32    	blank FC_UNUSED)
 {
     /* Deprecated. */
     return FcFalse;
diff --git a/src/fcfreetype.c b/src/fcfreetype.c
index f0e2f1c..d319761 100644
--- a/src/fcfreetype.c
+++ b/src/fcfreetype.c
@@ -1158,7 +1158,7 @@
 FcFreeTypeQueryFace (const FT_Face  face,
 		     const FcChar8  *file,
 		     int	    id,
-		     FcBlanks	    *blanks)
+		     FcBlanks	    *blanks FC_UNUSED)
 {
     FcPattern	    *pat;
     int		    slant = -1;
@@ -2109,7 +2109,7 @@
 #define APPROXIMATELY_EQUAL(x,y) (FC_ABS ((x) - (y)) <= FC_MAX (FC_ABS (x), FC_ABS (y)) / 33)
 
 FcCharSet *
-FcFreeTypeCharSetAndSpacing (FT_Face face, FcBlanks *blanks, int *spacing)
+FcFreeTypeCharSetAndSpacing (FT_Face face, FcBlanks *blanks FC_UNUSED, int *spacing)
 {
     FcChar32	    page, off, ucs4;
     FcCharSet	    *fcs;
@@ -2238,7 +2238,7 @@
 }
 
 FcCharSet *
-FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks)
+FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks FC_UNUSED)
 {
     int spacing;