diff --git a/dtcw b/dtcw
index b742068..5587b20 100755
--- a/dtcw
+++ b/dtcw
@@ -12,7 +12,7 @@ set -o pipefail
 
 # See https://github.com/docToolchain/docToolchain/releases for available versions.
 # Set DTC_VERSION to "latest" to get the latest, yet unreleased version.
-: "${DTC_VERSION:=3.4.0}"
+: "${DTC_VERSION:=3.4.1}"
 
 # if not set, public docker hub is used
 : "${DTC_DOCKER_PREFIX:=}"
@@ -129,7 +129,9 @@ main() {
     fi
 
     # echo "Command to invoke: ${command}"
-    exec ${emu} ${bash} -c "${command}"
+    # shellcheck disable=SC2086
+    # as we hope to know what we are doing here ;-)
+    exec ${emu} ${bash} ${DTC_SHELL_DEBUG:-} -c "${command}"
 }
 
 assert_argument_exists() {
@@ -642,12 +644,16 @@ build_command() {
             DTC_OPTS="${DTC_OPTS} '-Dgradle.user.home=${DTC_ROOT}/.gradle'"
         fi
         if [ "${env}" = local ]; then
+            if [ -x "${DTC_HOME}/bin/doctoolchain" ]; then
+                cmd="${DTC_HOME}/bin/doctoolchain"
             # is doctoolchain available on the path?
-            if command -v doctoolchain >/dev/null 2>&1; then
-                cmd="doctoolchain . ${*} ${DTC_OPTS}"
+            elif command -v doctoolchain >/dev/null 2>&1; then
+                cmd="doctoolchain"
             else
-                cmd="${DTC_HOME}/bin/doctoolchain . ${*} ${DTC_OPTS}"
+                echo "Could not find doctoolchain executable, neither in '${DTC_HOME}' nor on PATH ('${PATH}')" >&2
+                exit 1
             fi
+            cmd="${cmd} . ${*} ${DTC_OPTS}"
         else
             cmd="$(sdk_home_doctoolchain "${version}")/bin/doctoolchain . ${*} ${DTC_OPTS}"
         fi
diff --git a/dtcw.bat b/dtcw.bat
index bda2253..7e7e0bb 100644
--- a/dtcw.bat
+++ b/dtcw.bat
@@ -18,7 +18,7 @@ $ErrorActionPreference = "Stop"
 
 # See https://github.com/docToolchain/docToolchain/releases for available versions.
 # Set DTC_VERSION to "latest" to get the latest, yet unreleased version.
-$DTC_VERSION = "3.4.0"
+$DTC_VERSION = "3.4.1"
 if ($env:DTC_VERSION) { $DTC_VERSION = $env:DTC_VERSION }
 
 #here you can specify the URL of a theme to use with generateSite-task
diff --git a/dtcw.ps1 b/dtcw.ps1
index 8354571..0360453 100644
--- a/dtcw.ps1
+++ b/dtcw.ps1
@@ -9,7 +9,7 @@ $ErrorActionPreference = "Stop"
 
 # See https://github.com/docToolchain/docToolchain/releases for available versions.
 # Set DTC_VERSION to "latest" to get the latest, yet unreleased version.
-$DTC_VERSION = "3.4.0"
+$DTC_VERSION = "3.4.1"
 if ($env:DTC_VERSION) { $DTC_VERSION = $env:DTC_VERSION }
 
 #here you can specify the URL of a theme to use with generateSite-task