diff --git a/src/PowderToySDL.cpp b/src/PowderToySDL.cpp
index 39c4aa55d..f61a55e94 100644
--- a/src/PowderToySDL.cpp
+++ b/src/PowderToySDL.cpp
@@ -16,6 +16,7 @@
 #include "graphics/Graphics.h"
 #if defined(LIN)
 #include "icon.h"
+#include <signal.h>
 #endif
 
 #ifndef WIN