diff --git a/src/utils/interface/lighthouse/lighthouse_calibration.h b/src/utils/interface/lighthouse/lighthouse_calibration.h
index 80ce022d01..fd2ff2310f 100644
--- a/src/utils/interface/lighthouse/lighthouse_calibration.h
+++ b/src/utils/interface/lighthouse/lighthouse_calibration.h
@@ -1,6 +1,10 @@
 #pragma once
 
-#include "ootx_decoder.h"
+#include <stdbool.h>
+
+// Forward declaration from ootx_decoder.h. Avoid exposing __fp16 type, which
+// doesn't exist on x86, so this header can be compiled for Python bindings.
+struct ootxDataFrame_s;
 
 typedef struct {
   float phase;
diff --git a/src/utils/src/lighthouse/lighthouse_calibration.c b/src/utils/src/lighthouse/lighthouse_calibration.c
index c8bcc90a71..373dc3ec92 100644
--- a/src/utils/src/lighthouse/lighthouse_calibration.c
+++ b/src/utils/src/lighthouse/lighthouse_calibration.c
@@ -31,6 +31,7 @@
  */
 
 #include "lighthouse_calibration.h"
+#include "ootx_decoder.h"
 
 #include <math.h>
 #include "cf_math.h"