diff --git a/auto/configure b/auto/configure
index 786f4f8..6a81555 100755
--- a/auto/configure
+++ b/auto/configure
@@ -46,7 +46,7 @@
 have=NGX_SBIN_PATH value="\"$SBIN_PATH\"" . auto/define
 have=NGX_CONF_PATH value="\"$CONF_PATH\"" . auto/define
 have=NGX_PID_PATH value="\"$PID_PATH\"" . auto/define
-if [ ".$NGX_ERROR_LOG_PATH" != "." ]; then
+if [ ".$ERROR_LOG_PATH" != "." ]; then
     have=NGX_ERROR_LOG_PATH value="\"$ERROR_LOG_PATH\"" . auto/define
 fi
 have=NGX_HTTP_LOG_PATH value="\"$HTTP_LOG_PATH\"" . auto/define