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-rw-r--r--guix-data-service/web/html-utils.scm3
1 files changed, 2 insertions, 1 deletions
diff --git a/guix-data-service/web/html-utils.scm b/guix-data-service/web/html-utils.scm
index 5fa1ad4..660fcd3 100644
--- a/guix-data-service/web/html-utils.scm
+++ b/guix-data-service/web/html-utils.scm
@@ -70,7 +70,8 @@
value))
(define (build-url build-server-id build-server-build-id derivation-file-name)
- (if (string? build-server-build-id)
+ (if (and (string? build-server-build-id)
+ (not (string-null? build-server-build-id)))
(simple-format
#f "/build-server/~A/build?build_server_build_id=~A"
build-server-id