diff --git a/R/otp-isochrone-batch.R b/R/otp-isochrone-batch.R
index 863d8e5..b90f729 100644
--- a/R/otp-isochrone-batch.R
+++ b/R/otp-isochrone-batch.R
@@ -155,7 +155,7 @@ otp_process_results_iso <- function(text, fromID){
   response$id <- seq(1, nrow(response))
   response$fromPlace <- fromID
 
-  if (any(!sf::st_is_valid(response))) {
+  if (!all(sf::st_is_valid(response))) {
     suppressMessages(suppressWarnings(response <- sf::st_make_valid(response)))
   }
 
diff --git a/R/otp-plan.R b/R/otp-plan.R
index d0f4748..011cb38 100644
--- a/R/otp-plan.R
+++ b/R/otp-plan.R
@@ -152,7 +152,7 @@ otp_plan <- function(otpcon = NA,
   checkmate::assert_logical(distance_balance, len = 1, null.ok = FALSE)
   checkmate::assert_logical(get_elevation, len = 1, null.ok = FALSE)
 
-  if (distance_balance & (ncores > 1)) {
+  if (distance_balance && (ncores > 1)) {
     if (is.null(fromID)) {
       stop("Distance balancing changes the order of the output, so fromID must not be NULL")
     }
@@ -187,13 +187,13 @@ otp_plan <- function(otpcon = NA,
   nrfp <- nrow(fromPlace)
   nrtp <- nrow(toPlace)
   if (nrfp != nrtp) {
-    if (nrfp > nrtp & nrtp == 1) {
+    if (nrfp > nrtp && nrtp == 1) {
       toPlace <- toPlace[rep(1, times = nrfp), ]
       if (!is.null(toID)) {
         toID <- toID[rep(1, times = nrfp)]
       }
       message("repeating toPlace to match length of fromPlace")
-    } else if (nrtp > nrfp & nrfp == 1) {
+    } else if (nrtp > nrfp && nrfp == 1) {
       fromPlace <- fromPlace[rep(1, times = nrtp), ]
       if (!is.null(fromID)) {
         fromID <- fromID[rep(1, times = nrtp)]
@@ -204,7 +204,7 @@ otp_plan <- function(otpcon = NA,
     }
   }
 
-  if (distance_balance & (ncores > 1)) {
+  if (distance_balance && (ncores > 1)) {
     dists <- geodist::geodist(fromPlace, toPlace, paired = TRUE)
 
     # Remove 0m pairs as OTP will fail on them anyway
@@ -243,7 +243,7 @@ otp_plan <- function(otpcon = NA,
 
   if (otpcon$otp_version >= 2) {
     # maxWalkDistance causes itinaries to fail
-    if (mode == "CAR" | grepl("TRANSIT", mode)) {
+    if (mode == "CAR" || grepl("TRANSIT", mode)) {
       query$maxWalkDistance <- NULL
     }
   }
diff --git a/R/otp-setup.R b/R/otp-setup.R
index cbd758f..92e4ee4 100644
--- a/R/otp-setup.R
+++ b/R/otp-setup.R
@@ -402,7 +402,7 @@ otp_stop <- function(warn = TRUE, kill_all = TRUE) {
     )
   }
 
-  if (checkmate::testOS("linux") | checkmate::testOS("mac")) {
+  if (checkmate::testOS("linux") || checkmate::testOS("mac")) {
     message("The following Java instances have been found:")
     system("ps -A |grep java")
     if (!kill_all) {
@@ -456,7 +456,7 @@ otp_checks <- function(otp = NULL,
     chkG <- file.exists(paste0(dir, "/graphs/", router, "/Graph.obj"))
     chkg <- file.exists(paste0(dir, "/graphs/", router, "/graph.obj"))
 
-    if(!(chkG | chkg)){
+    if(!(chkG || chkg)){
       stop("File does not exist")
     }
 
@@ -525,7 +525,7 @@ otp_check_java <- function(otp_version = 1.5) {
     }
 
     if (otp_version < 2) {
-      if (java_version >= 1.8 & java_version < 1.9) {
+      if (java_version >= 1.8 && java_version < 1.9) {
         message("You have the correct version of Java for OTP 1.x")
         return(TRUE)
       }
@@ -544,8 +544,8 @@ otp_check_java <- function(otp_version = 1.5) {
       return(FALSE)
     }
 
-    if (otp_version >= 2 & otp_version <= 2.1) {
-      if (java_version >= 1.8 & java_version < 1.9) {
+    if (otp_version >= 2 && otp_version <= 2.1) {
+      if (java_version >= 1.8 && java_version < 1.9) {
         warning("You have OTP 2.0 or 2.1 but the version of Java for OTP 1.x")
         return(FALSE)
       }
@@ -565,7 +565,7 @@ otp_check_java <- function(otp_version = 1.5) {
     }
 
     if (otp_version >= 2.2) {
-      if (java_version >= 1.8 & java_version < 1.9) {
+      if (java_version >= 1.8 && java_version < 1.9) {
         warning("You have OTP 2.2+ but the version of Java for OTP 1.x")
         return(FALSE)
       }
diff --git a/R/utility-functions.R b/R/utility-functions.R
index 6a5d769..b5c2457 100644
--- a/R/utility-functions.R
+++ b/R/utility-functions.R
@@ -61,7 +61,7 @@ parse_leg <- function(leg,
   leg$from <- NULL
   leg$to <- NULL
 
-  if (get_elevation | full_elevation) {
+  if (get_elevation || full_elevation) {
     elevation <- purrr::map(leg$steps, parse_elevation)
   } else {
     elevation <- list(NULL)