diff --git a/r5dev/engine/gl_model_private.h b/r5dev/engine/gl_model_private.h
index 08ea97d6..5b1f7ac6 100644
--- a/r5dev/engine/gl_model_private.h
+++ b/r5dev/engine/gl_model_private.h
@@ -6,6 +6,9 @@
 // $Date:         $
 // $NoKeywords: $
 //=============================================================================//
+#ifndef GL_MODEL_PRIVATE_H
+#define GL_MODEL_PRIVATE_H
+
 #include "vpc/keyvalues.h"
 #include "mathlib/vector.h"
 #include "common/qlimits.h"
@@ -66,4 +69,6 @@ struct model_t // !! CONFIRMED !!
 		spritedata_t	sprite;
 #endif // !DEDICATED
 	};
-};
\ No newline at end of file
+};
+
+#endif // GL_MODEL_PRIVATE_H
\ No newline at end of file