diff --git a/src/core/ProjectRenderer.cpp b/src/core/ProjectRenderer.cpp
index 6b44a1d63..f901a938d 100644
--- a/src/core/ProjectRenderer.cpp
+++ b/src/core/ProjectRenderer.cpp
@@ -213,6 +213,7 @@ void ProjectRenderer::run()
 void ProjectRenderer::abortProcessing()
 {
 	m_abort = true;
+	wait();
 }