diff --git a/core/config/model_config.go b/core/config/model_config.go
index 1750fb3ac..509be46b0 100644
--- a/core/config/model_config.go
+++ b/core/config/model_config.go
@@ -652,7 +652,7 @@ func (c *ModelConfig) GuessUsecases(u ModelConfigUsecase) bool {
 
 	}
 	if (u & FLAG_RERANK) == FLAG_RERANK {
-		if c.Backend != "rerankers" {
+		if c.Backend != "rerankers" && (c.Reranking == nil || !*c.Reranking) {
 			return false
 		}
 	}
diff --git a/core/config/model_config_loader.go b/core/config/model_config_loader.go
index 664899230..68647a086 100644
--- a/core/config/model_config_loader.go
+++ b/core/config/model_config_loader.go
@@ -91,6 +91,7 @@ func readModelConfigsFromFile(file string, opts ...ConfigLoaderOption) ([]*Model
 		for _, cc := range configs {
 			cc.modelConfigFile = file
 			cc.SetDefaults(opts...)
+			cc.syncKnownUsecasesFromString()
 		}
 		return configs, nil
 	}
@@ -102,6 +103,7 @@ func readModelConfigsFromFile(file string, opts ...ConfigLoaderOption) ([]*Model
 	}
 
 	c.modelConfigFile = file
+	c.syncKnownUsecasesFromString()
 	c.SetDefaults(opts...)
 
 	return []*ModelConfig{c}, nil