--- a/src/cmd/ksh93/Makefile
+++ b/src/cmd/ksh93/Makefile
@@ -28,7 +28,7 @@ SHOPT_COSHELL == 1 /* build with connection to coshell */
SHOPT_CRNL == /* accept <cr><nl> for <nl> */
SHOPT_DYNAMIC == 1 /* dynamic loading for builtins */
SHOPT_ECHOPRINT == /* make echo equivalent to print */
-SHOPT_EDPREDICT == 1 /* predictive editing */
+SHOPT_EDPREDICT == 0 /* predictive editing */
SHOPT_ESH == 1 /* emacs/gmacs edit mode */
SHOPT_FILESCAN == 1 /* fast file scan */
SHOPT_FIXEDARRAY == 1 /* fixed dimension indexed array */