diff --git a/src/rendering/twn_draw.c b/src/rendering/twn_draw.c
index 58d7f3f..652afc9 100644
--- a/src/rendering/twn_draw.c
+++ b/src/rendering/twn_draw.c
@@ -456,7 +456,7 @@ DrawCameraFromPrincipalAxesResult draw_camera_from_principal_axes(Vec3 position,
 
     /* rotate so that yaw = 0 results in (0, 0, 1) target vector */
     float yawc, yaws, pitchc, pitchs;
-    sincosf(yaw + (float)M_PI, &yaws, &yawc);
+    sincosf(yaw + (float)M_PI_2, &yaws, &yawc);
     sincosf(pitch, &pitchs, &pitchc);
 
     Camera const camera = {