--- configure.38-1611	Wed Jan 21 00:15:20 1998
+++ configure	Wed Jan 21 00:19:56 1998
@@ -2067,7 +2067,7 @@
 fi
 
 echo "$ac_t""$cf_cv_dcl_sys_errlist" 1>&6
-test $cf_cv_dcl_sys_errlist = no && cat >> confdefs.h <<\EOF
+test $cf_cv_dcl_sys_errlist = no || cat >> confdefs.h <<\EOF
 #define DECL_SYS_ERRLIST 1
 EOF