diff --git a/src/cf/functions.m4 b/src/cf/functions.m4
index 442f759f14..927b75f459 100644
--- a/src/cf/functions.m4
+++ b/src/cf/functions.m4
@@ -26,7 +26,6 @@ AC_CHECK_FUNCS([ \
     regerror \
     regexec \
     setitimer \
-    setvbuf \
     sigaction \
     strcasestr \
     strerror \
diff --git a/src/util/serverLog.c b/src/util/serverLog.c
index d5d3728846..36e8c5eee8 100644
--- a/src/util/serverLog.c
+++ b/src/util/serverLog.c
@@ -527,11 +527,7 @@ RedirectStdStreams(const char *fileName)
 	/* don't care */
     }
     if (freopen(fileName, "a", stderr) != NULL) {
-#ifdef HAVE_SETVBUF
 	setvbuf(stderr, NULL, _IONBF, 0);
-#else
-	setbuf(stderr, NULL);
-#endif
     }
 }