diff --git a/changelog/unreleased/pr-17280.toml b/changelog/unreleased/pr-17280.toml
new file mode 100644
index 000000000000..77b7924aaec6
--- /dev/null
+++ b/changelog/unreleased/pr-17280.toml
@@ -0,0 +1,5 @@
+type = "fixed"
+message = "Fix Sidecar collector configuration form submit button not being clickable."
+
+issues = ["17185"]
+pulls = ["17280"]
diff --git a/graylog2-web-interface/src/components/sidecars/configuration-forms/ConfigurationForm.tsx b/graylog2-web-interface/src/components/sidecars/configuration-forms/ConfigurationForm.tsx
index b6fd234dc024..83d68d829405 100644
--- a/graylog2-web-interface/src/components/sidecars/configuration-forms/ConfigurationForm.tsx
+++ b/graylog2-web-interface/src/components/sidecars/configuration-forms/ConfigurationForm.tsx
@@ -187,6 +187,7 @@ const ConfigurationForm = ({
       nextFormData.template = defaultTemplate;
     }
 
+    _debouncedValidateFormData(nextFormData, true);
     setFormData(nextFormData);
   };