diff --git a/bedstead.c b/bedstead.c
index c984bc1..7f25cbe 100644
--- a/bedstead.c
+++ b/bedstead.c
@@ -189,14 +189,14 @@ struct param const *param = &params[0];
 #define XQTR_S (XPIX_S/4)
 #define YQTR_S (YPIX_S/4)
 
-void doprologue(void);
-void dochar(char const data[YSIZE], unsigned flags);
+static void doprologue(void);
+static void dochar(char const data[YSIZE], unsigned flags);
 static void dochar_plotter(char const data[YSIZE], unsigned flags);
 static void domosaic(unsigned code, bool sep);
 static void dopanose(void);
 static void glyph_complement(void);
 
-struct glyph {
+static struct glyph {
 	char data[YSIZE];
 	int unicode;
 	char const *name;
@@ -1907,7 +1907,7 @@ whitepixel(int x, int y, int bl, int br, int tr, int tl)
 	}
 }
 
-void
+static void
 dochar(char const data[YSIZE], unsigned flags)
 {
 	int x, y;