diff --git a/src/sentry_core.c b/src/sentry_core.c
index f37a281e1..108b9581e 100644
--- a/src/sentry_core.c
+++ b/src/sentry_core.c
@@ -406,7 +406,7 @@ sentry__roll_dice(double probability)
 sentry_uuid_t
 sentry__capture_event(sentry_value_t event)
 {
-    sentry_uuid_t event_id;
+    sentry_uuid_t event_id = sentry_uuid_nil();
     sentry_envelope_t *envelope = NULL;
 
     bool was_captured = false;