diff --git a/configure.sh b/configure.sh
index 792a40a..782b611 100755
--- a/configure.sh
+++ b/configure.sh
@@ -153,13 +153,7 @@ else
     AC_DEFINE 'INITRNG(x)' '(void)1'
 fi
 
-if AC_CHECK_FUNCS 'bzero((char*)0,0)'; then
-    : # Yay
-elif AC_CHECK_FUNCS 'memset((char*)0,0,0)'; then
-    AC_DEFINE 'bzero(p,s)' 'memset(p,s,0)'
-else
-    AC_FAIL "$TARGET requires bzero or memset"
-fi
+AC_CHECK_FUNCS 'memset((char*)0,0,0)' ||  AC_FAIL "$TARGET requires memset"
 
 if AC_CHECK_FUNCS random; then
     AC_DEFINE 'COINTOSS()' '(random()&1)'
diff --git a/gethopt.c b/gethopt.c
index 8b15b04..4c6e4ce 100644
--- a/gethopt.c
+++ b/gethopt.c
@@ -7,7 +7,6 @@
 #include <string.h>
 
 #include "gethopt.h"
-#include "config.h" /* for bzero() macro on systems that don't have it */
 
 
 void
@@ -16,7 +15,7 @@ struct h_context *ctx;
 int argc;
 char **argv;
 {
-    bzero(ctx, sizeof *ctx);
+    memset(ctx, 0, sizeof *ctx);
     ctx->argc = argc;
     ctx->argv = argv;
     ctx->optind = 1;