diff --git a/R/standalone-purrr.R b/R/standalone-purrr.R
index 3a642669..f836ae25 100644
--- a/R/standalone-purrr.R
+++ b/R/standalone-purrr.R
@@ -199,7 +199,7 @@ accumulate_right <- function(.x, .f, ..., .init) {
   Reduce(f, .x, init = .init, right = TRUE, accumulate = TRUE)
 }
 
-detect <- function(.x, .f, ..., .right = FALSE, .p = is_true) {
+detect <- function(.x, .f, ..., .right = FALSE, .p = rlang::is_true) {
   .p <- rlang::as_function(.p, env = rlang::global_env())
   .f <- rlang::as_function(.f, env = rlang::global_env())
 
@@ -210,7 +210,7 @@ detect <- function(.x, .f, ..., .right = FALSE, .p = is_true) {
   }
   NULL
 }
-detect_index <- function(.x, .f, ..., .right = FALSE, .p = is_true) {
+detect_index <- function(.x, .f, ..., .right = FALSE, .p = rlang::is_true) {
   .p <- rlang::as_function(.p, env = rlang::global_env())
   .f <- rlang::as_function(.f, env = rlang::global_env())