diff --git a/configure.ac b/configure.ac
index 799d36a8383c..58ffca37b5cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -372,6 +372,9 @@ case $host_alias in
     ;;
 esac
 
+dnl Solaris/Illumos for process mapping.
+AC_SEARCH_LIBS([Pgrab], [proc])
+
 dnl Then headers.
 dnl ----------------------------------------------------------------------------
 
@@ -644,9 +647,6 @@ PHP_CHECK_FUNC_LIB(nanosleep, rt)
 dnl Haiku does not have network api in libc.
 PHP_CHECK_FUNC_LIB(setsockopt, network)
 
-dnl Solaris/Illumos for process mapping.
-PHP_CHECK_FUNC_LIB(Pgrab, proc)
-
 dnl Check for getaddrinfo, should be a better way, but... Also check for working
 dnl getaddrinfo.
 AC_CACHE_CHECK([for getaddrinfo], ac_cv_func_getaddrinfo,