diff --git a/datasource/metadata/cloudsigma/server_context.go b/datasource/metadata/cloudsigma/server_context.go
index b618e45..d1a5015 100644
--- a/datasource/metadata/cloudsigma/server_context.go
+++ b/datasource/metadata/cloudsigma/server_context.go
@@ -108,7 +108,7 @@ func (scs *serverContextService) FetchMetadata() (metadata datasource.Metadata,
 	}
 
 	metadata.SSHPublicKeys = map[string]string{}
-	if key, ok := inputMetadata.Meta["ssh_public_key"]; ok {
+	if key, _ := inputMetadata.Meta["ssh_public_key"]; len(key) > 0 {
 		splitted := strings.Split(key, " ")
 		metadata.SSHPublicKeys[splitted[len(splitted)-1]] = key
 	}