diff --git a/core/site_api.go b/core/site_api.go
index 8a35ee052..b098e1e1e 100644
--- a/core/site_api.go
+++ b/core/site_api.go
@@ -183,8 +183,8 @@ func (site *Site) SetBufferSoc(soc float64) error {
 		return ErrBatteryNotConfigured
 	}
 
-	if soc != 0 && soc <= site.prioritySoc {
-		return errors.New("buffer soc must be larger than priority soc")
+	if soc != 0 && soc < site.prioritySoc {
+		return errors.New("buffer soc must not be smaller than priority soc")
 	}
 
 	if site.bufferStartSoc != 0 && soc > site.bufferStartSoc {