diff --git a/soh/src/code/z_lights.c b/soh/src/code/z_lights.c
index fbbad381a..bee677276 100644
--- a/soh/src/code/z_lights.c
+++ b/soh/src/code/z_lights.c
@@ -4,6 +4,8 @@
 
 #include "objects/gameplay_keep/gameplay_keep.h"
 
+#include "soh/frame_interpolation.h"
+
 #define LIGHTS_BUFFER_SIZE 32
 //#define LIGHTS_BUFFER_SIZE 1024 // Kill me