diff --git a/src/r_data/a_lightprobe.cpp b/src/r_data/a_lightprobe.cpp
index 4057041cc2..c93d917544 100644
--- a/src/r_data/a_lightprobe.cpp
+++ b/src/r_data/a_lightprobe.cpp
@@ -19,7 +19,7 @@
 **  3. This notice may not be removed or altered from any source distribution.
 */
 
-
+#include "a_dynlight.h"
 #include "actor.h"
 #include "a_lightprobe.h"