diff --git a/loolwsd/common/SigUtil.hpp b/loolwsd/common/SigUtil.hpp
index 1d1b0f11d..a17d8082e 100644
--- a/loolwsd/common/SigUtil.hpp
+++ b/loolwsd/common/SigUtil.hpp
@@ -12,9 +12,6 @@
 
 #include <atomic>
 #include <mutex>
-#include <string>
-
-#include <Poco/Process.h>
 
 /// Flag to stop pump loops.
 extern std::atomic<bool> TerminationFlag;