diff --git a/docs/src_examples/cosmo_basic/basic_camb.yaml b/docs/src_examples/cosmo_basic/basic_camb.yaml
index 67dc15fbc..6f531d9d0 100644
--- a/docs/src_examples/cosmo_basic/basic_camb.yaml
+++ b/docs/src_examples/cosmo_basic/basic_camb.yaml
@@ -103,7 +103,7 @@ params:
       scale: 0.006
     proposal: 0.003
     latex: \tau_\mathrm{reio}
-  zre:
+  zrei:
     latex: z_\mathrm{re}
   sigma8:
     latex: \sigma_8