diff --git a/packages/taler-util/src/taleruri.ts b/packages/taler-util/src/taleruri.ts
index 777cb5245..fff1ca833 100644
--- a/packages/taler-util/src/taleruri.ts
+++ b/packages/taler-util/src/taleruri.ts
@@ -767,7 +767,7 @@ function getUrlInfo(
   const qp = new URLSearchParams();
   let withParams = false;
   Object.entries(params).forEach(([name, value]) => {
-    if (value) {
+    if (value !== undefined) {
       withParams = true;
       qp.append(name, value);
     }