2 files changed, 2 insertions, 2 deletions

diff --git a/lib/utils_base.h b/lib/utils_base.h
index 04f6370c..d69b0da1 100644
--- a/lib/utils_base.h
+++ b/lib/utils_base.h
@@ -62,7 +62,7 @@ int check_range(double, range *);
 int get_status(double, thresholds *);
 
 /* All possible characters in a threshold range */
-#define NP_THRESHOLDS_CHARS "0123456789.:@~"
+#define NP_THRESHOLDS_CHARS "-0123456789.:@~"
 
 char *np_escaped_string (const char *);
 
diff --git a/plugins/check_snmp.c b/plugins/check_snmp.c
index ca17970c..d516fbc1 100644
--- a/plugins/check_snmp.c
+++ b/plugins/check_snmp.c
@@ -459,7 +459,7 @@ main (int argc, char **argv)
                 /* Process this block for numeric comparisons */
                 /* Make some special values,like Timeticks numeric only if a threshold is defined */
                 if (thlds[i]->warning || thlds[i]->critical || calculate_rate) {
-                        ptr = strpbrk (show, "0123456789");
+                        ptr = strpbrk (show, "-0123456789");
                         if (ptr == NULL)
                                 die (STATE_UNKNOWN,_("No valid data returned (%s)\n"), show);
                         while (i >= response_size) {