diff --git a/src/datasource-zabbix/datasource.js b/src/datasource-zabbix/datasource.js
index cd46410..d2bf766 100644
--- a/src/datasource-zabbix/datasource.js
+++ b/src/datasource-zabbix/datasource.js
@@ -618,8 +618,8 @@ export class ZabbixDatasource {
     let useTrendsFrom = Math.ceil(dateMath.parse('now-' + this.trendsFrom) / 1000);
     let useTrendsRange = Math.ceil(utils.parseInterval(this.trendsRange) / 1000);
     let useTrends = this.trends && (
-      (timeFrom <= useTrendsFrom) ||
-      (timeTo - timeFrom >= useTrendsRange)
+      (timeFrom < useTrendsFrom) ||
+      (timeTo - timeFrom > useTrendsRange)
     );
     return useTrends;
   }
diff --git a/src/datasource-zabbix/specs/datasource.spec.js b/src/datasource-zabbix/specs/datasource.spec.js
index f03da65..7c95335 100644
--- a/src/datasource-zabbix/specs/datasource.spec.js
+++ b/src/datasource-zabbix/specs/datasource.spec.js
@@ -56,7 +56,7 @@ describe('ZabbixDatasource', () => {
     });
 
     it('should use trends if it enabled and time more than trendsFrom', (done) => {
-      let ranges = ['now-7d', 'now-168h', 'now-1M', 'now-1y'];
+      let ranges = ['now-8d', 'now-169h', 'now-1M', 'now-1y'];
 
       _.forEach(ranges, range => {
         ctx.options.range.from = range;
@@ -73,7 +73,7 @@ describe('ZabbixDatasource', () => {
     });
 
     it('shouldnt use trends if it enabled and time less than trendsFrom', (done) => {
-      let ranges = ['now-6d', 'now-167h', 'now-1h', 'now-30m', 'now-30s'];
+      let ranges = ['now-7d', 'now-168h', 'now-1h', 'now-30m', 'now-30s'];
 
       _.forEach(ranges, range => {
         ctx.options.range.from = range;