--- a/efaxos.h
+++ b/efaxos.h
@@ -13,7 +13,6 @@
 
 /* Bit order reversal table. */
 
-extern unsigned char normalbits [ ] ;
 
 typedef enum ttymodes		/* serial port modes:  */
 {
--- a/efaxlib.h
+++ b/efaxlib.h
@@ -208,7 +208,7 @@
 /* Bit reversal lookup tables (note that the `normalbits' array
    is the one actually used for the bit reversal.  */
 
-uchar reversebits [ 256 ], normalbits [ 256 ] ;
+extern uchar reversebits [ 256 ], normalbits [ 256 ] ;
 
 void initbittab(void) ;
 
--- a/efaxlib.c
+++ b/efaxlib.c
@@ -25,6 +25,8 @@
 
 short short256 = 256 ;		/* for endian-ness detection */
 
+uchar reversebits [ 256 ], normalbits [ 256 ] ;
+
 /* Make sure printf strings have only %d escapes and n or fewer
    of them.  Returns 0 if OK, 1 on error. */