diff --git a/sendmail.spec b/sendmail.spec
index 0243a50..f39d161 100644
--- a/sendmail.spec
+++ b/sendmail.spec
@@ -144,7 +144,9 @@ your sendmail.cf file.
 # generate redhat config file
 cat > redhat.config.m4 << EOF
 define(\`confMAPDEF', \`-DNEWDB -DNIS -DHESIOD -DMAP_REGEX -DSOCKETMAP')
+%ifnarch ppc64
 define(\`confOPTIMIZE', \`\`\`${RPM_OPT_FLAGS}''')
+%endif
 define(\`confENVDEF', \`-I/usr/include/db4 -I/usr/kerberos/include -Wall -DXDEBUG=0 -DTCPWRAPPERS -DNETINET6 -DHES_GETMAILHOST -DUSE_VENDOR_CF_PATH=1 -D_FFR_WORKAROUND_BROKEN_NAMESERVERS -D_FFR_SMTP_SSL')
 define(\`confLIBDIRS', \`-L/usr/kerberos/%{_lib}')
 define(\`confLIBS', \`-lnsl -lwrap -lhesiod -lcrypt -ldb')