diff --git a/routes/compat/wakatime/v1/summaries.go b/routes/compat/wakatime/v1/summaries.go
index 62102e8..0bbf7a6 100644
--- a/routes/compat/wakatime/v1/summaries.go
+++ b/routes/compat/wakatime/v1/summaries.go
@@ -69,12 +69,17 @@ func (h *SummariesHandler) loadUserSummaries(r *http.Request) ([]*models.Summary
 
 	var start, end time.Time
 	if rangeParam != "" {
+		// range param takes precedence
 		if err, parsedFrom, parsedTo := utils.ResolveInterval(rangeParam); err == nil {
 			start, end = parsedFrom, parsedTo
 		} else {
 			return nil, errors.New("invalid 'range' parameter"), http.StatusBadRequest
 		}
+	} else if err, parsedFrom, parsedTo := utils.ResolveInterval(rangeParam); err == nil && start == end {
+		// also accept start param to be a range param
+		start, end = parsedFrom, parsedTo
 	} else {
+		// eventually, consider start and end params a date
 		var err error
 
 		start, err = time.Parse(time.RFC3339, strings.Replace(startParam, " ", "+", 1))