diff --git a/app/task/render/render.cpp b/app/task/render/render.cpp
index bdf9f3571..5c4a0058f 100644
--- a/app/task/render/render.cpp
+++ b/app/task/render/render.cpp
@@ -83,7 +83,7 @@ void RenderTask::Render(const TimeRangeList& video_range,
 
   // Get hashes for each frame and group likes together
   int progress_counter = 0;
-  int nb_frames;
+  int nb_frames = 0;
 
   QMap<QByteArray, rational> times_to_render;