Index: head/Mk/Uses/php.mk
===================================================================
--- head/Mk/Uses/php.mk
+++ head/Mk/Uses/php.mk
@@ -244,7 +244,7 @@
 			${STAGEDIR}${PREFIX}/include/php/ext/${PHP_MODNAME}/${header}
 .    endfor
 	@${RM} ${STAGEDIR}${PREFIX}/include/php/ext/${PHP_MODNAME}/config.h
-	@${GREP} "#define \(COMPILE\|HAVE\|USE\)_" ${WRKSRC}/config.h \
+	@${EGREP} "#define (COMPILE|HAVE|USE)_" ${WRKSRC}/config.h \
 		> ${STAGEDIR}${PREFIX}/include/php/ext/${PHP_MODNAME}/config.h
 	@${MKDIR} ${STAGEDIR}${PREFIX}/etc/php
 .    if ${php_ARGS:Mzend}