diff --git a/src/spfx.c b/src/spfx.c
index 9ae82b7..51d1773 100644
--- a/src/spfx.c
+++ b/src/spfx.c
@@ -176,7 +176,9 @@ void spfx_clear(void) {
     spfx_destroy(spfx_stack_back, &spfx_nstack_back, i);
 
   /* Clear rumble. */
-  shake_rad = 0;
+  shake_rad = 0.;
+  shake_pos.x = shake_pos.y = 0.;
+  shake_vel.x = shake_vel.y = 0.;
 }
 
 static void spfx_destroy(SPFX* layer, int* nlayer, int spfx) {