diff --git a/src/cam.c b/src/cam.c
index af9fe34..c1140d2 100644
--- a/src/cam.c
+++ b/src/cam.c
@@ -204,7 +204,7 @@ static int mk_cam(uint8_t *cam_oer, uint16_t *cam_len) {
         bvc_hf->heading.headingValue = epv.space.data.heading.value;
         bvc_hf->heading.headingConfidence = epv.space.data.heading.confidence;
 
-        itss_space_unlock(epv);
+        itss_space_unlock();
 
         if (lat_conf > lon_conf) {
             bc->referencePosition.positionConfidenceEllipse.semiMinorAxisLength = lon_conf;
@@ -485,7 +485,7 @@ int lightship_check() {
                     if (avg_speed * delta_time > 4) rv = 1;
                 }
             }
-            itss_space_unlock(epv);
+            itss_space_unlock();
         }