diff --git a/Sources/Engine/Base/Assert.h b/Sources/Engine/Base/Assert.h
index 337afe0..80f4aa3 100644
--- a/Sources/Engine/Base/Assert.h
+++ b/Sources/Engine/Base/Assert.h
@@ -38,6 +38,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifdef PLATFORM_UNIX  /* rcg10042001 */
 #include "SDL_assert.h"
 #define _assert(x, y, z) SDL_assert(0)
+#include <signal.h> // raise()
 #endif