1 files changed, 2 insertions, 2 deletions

diff --git a/plugins/utils.c b/plugins/utils.c
index 5dbdb4d..ec25473 100644
--- a/plugins/utils.c
+++ b/plugins/utils.c
@@ -521,8 +521,8 @@ char *perfdata (const char *label,
 {
         char *data = NULL;
 
-        if (index (label, '"'))
-                asprintf (&data, "\"%s\"=%ld%s;", label, val, uom);
+        if (strpbrk (label, "'= "))
+                asprintf (&data, "'%s'=%ld%s;", label, val, uom);
         else
                 asprintf (&data, "%s=%ld%s;", label, val, uom);