diff --git a/scripts/merge_config.sh b/scripts/merge_config.sh
index 8e65661c..03ddcf3f 100755
--- a/scripts/merge_config.sh
+++ b/scripts/merge_config.sh
@@ -7,9 +7,9 @@ if [ -n "$SYSREPOCFG_EXECUTABLE" ]; then
     SYSREPOCFG="$SYSREPOCFG_EXECUTABLE"
 # avoid problems with sudo PATH
 elif [ `id -u` -eq 0 ]; then
-    SYSREPOCFG=`su -c 'which sysrepocfg' -l $USER`
+    SYSREPOCFG=`su -c 'command -v sysrepocfg' -l $USER`
 else
-    SYSREPOCFG=`which sysrepocfg`
+    SYSREPOCFG=`command -v sysrepocfg`
 fi
 KS_KEY_NAME=genkey
 
diff --git a/scripts/merge_hostkey.sh b/scripts/merge_hostkey.sh
index efd74b31..5b1d33f4 100755
--- a/scripts/merge_hostkey.sh
+++ b/scripts/merge_hostkey.sh
@@ -7,17 +7,17 @@ if [ -n "$SYSREPOCFG_EXECUTABLE" ]; then
     SYSREPOCFG="$SYSREPOCFG_EXECUTABLE"
 # avoid problems with sudo PATH
 elif [ `id -u` -eq 0 ]; then
-    SYSREPOCFG=`su -c 'which sysrepocfg' -l $USER`
+    SYSREPOCFG=`su -c 'command -v sysrepocfg' -l $USER`
 else
-    SYSREPOCFG=`which sysrepocfg`
+    SYSREPOCFG=`command -v sysrepocfg`
 fi
 
 if [ -n "$OPENSSL_EXECUTABLE" ]; then
     OPENSSL="$OPENSSL_EXECUTABLE"
 elif [ `id -u` -eq 0 ]; then
-    OPENSSL=`su -c 'which openssl' -l $USER`
+    OPENSSL=`su -c 'command -v openssl' -l $USER`
 else
-    OPENSSL=`which openssl`
+    OPENSSL=`command -v openssl`
 fi
 
 # check that there is no SSH key with this name yet
diff --git a/scripts/remove.sh b/scripts/remove.sh
index ce736004..d229a353 100755
--- a/scripts/remove.sh
+++ b/scripts/remove.sh
@@ -6,9 +6,9 @@ if [ -n "$SYSREPOCTL_EXECUTABLE" ]; then
     SYSREPOCTL="$SYSREPOCTL_EXECUTABLE"
 # avoid problems with sudo PATH
 elif [ `id -u` -eq 0 ]; then
-    SYSREPOCTL=`su -c 'which sysrepoctl' -l $USER`
+    SYSREPOCTL=`su -c 'command -v sysrepoctl' -l $USER`
 else
-    SYSREPOCTL=`which sysrepoctl`
+    SYSREPOCTL=`command -v sysrepoctl`
 fi
 
 # array of modules to remove, exact same as setup.sh
diff --git a/scripts/setup.sh b/scripts/setup.sh
index 0468753d..68ea05a3 100755
--- a/scripts/setup.sh
+++ b/scripts/setup.sh
@@ -12,9 +12,9 @@ if [ -n "$SYSREPOCTL_EXECUTABLE" ]; then
     SYSREPOCTL="$SYSREPOCTL_EXECUTABLE"
 # avoid problems with sudo PATH
 elif [ `id -u` -eq 0 ]; then
-    SYSREPOCTL=`su -c 'which sysrepoctl' -l $USER`
+    SYSREPOCTL=`su -c 'command -v sysrepoctl' -l $USER`
 else
-    SYSREPOCTL=`which sysrepoctl`
+    SYSREPOCTL=`command -v sysrepoctl`
 fi
 MODDIR=${DESTDIR}${NP2_MODULE_DIR}
 PERMS=${NP2_MODULE_PERMS}