diff --git a/R/est-param-zt-binom.R b/R/est-param-zt-binom.R
index f005c0c1..770281ad 100644
--- a/R/est-param-zt-binom.R
+++ b/R/est-param-zt-binom.R
@@ -89,7 +89,7 @@ util_zero_truncated_binomial_param_estimate <- function(.x, .auto_gen_empirical
   mle_msg  <- optim_result$message
 
   # Create output tibble
-  ret <- tibble::tibble(
+  ret <- dplyr::tibble(
     dist_type = "Zero-Truncated Binomial",
     samp_size = n,
     min = minx,
diff --git a/R/est-param-ztn-binmoial.R b/R/est-param-ztn-binmoial.R
index 27a1bd02..aac175d4 100644
--- a/R/est-param-ztn-binmoial.R
+++ b/R/est-param-ztn-binmoial.R
@@ -84,7 +84,7 @@ util_zero_truncated_negative_binomial_param_estimate <- function(.x, .auto_gen_e
   mle_prob <- optim_result$par[2]
 
   # Create output tibble
-  ret <- tibble::tibble(
+  ret <- dplyr::tibble(
     dist_type = "Zero-Truncated Negative Binomial",
     samp_size = n,
     min = minx,