diff --git a/setup.sh b/setup.sh
index a8b8402..5d2ecc0 100644
--- a/setup.sh
+++ b/setup.sh
@@ -1430,7 +1430,7 @@ EOF
     
     # Füge DISPLAY-Variable zum .bashrc hinzu
     if ! grep -q "export DISPLAY=" "$kiosk_home/.bashrc" 2>/dev/null; then
-        cat >> "$kiosk_home/.bashrc" << 'EOF'
+        cat >> "$kiosk_home/.bashrc" << 'BASHRCEOF3'
 
 # X11 Display Konfiguration
 export DISPLAY=:0.0
@@ -1441,7 +1441,7 @@ if [ -z "$DISPLAY" ] && [ "$XDG_VTNR" = "1" ]; then
     export DISPLAY=:0.0
 fi
 
-EOF
+BASHRCEOF3
         chown "$KIOSK_USER:$KIOSK_USER" "$kiosk_home/.bashrc"
     fi
     
@@ -1877,7 +1877,7 @@ fix_project_permissions() {
     fi
     
     # Erstelle .npmrc für kiosk User
-    cat > "$kiosk_home/.npmrc" << 'EOF'
+    cat > "$kiosk_home/.npmrc" << 'NPMRCEOF'
 # npm-Konfiguration für kiosk User
 fund=false
 audit-level=moderate
@@ -1885,7 +1885,7 @@ progress=false
 loglevel=warn
 cache=/home/kiosk/.npm
 prefix=/home/kiosk/.npm-global
-EOF
+NPMRCEOF
     
     chown "$KIOSK_USER:$KIOSK_USER" "$kiosk_home/.npmrc" 2>/dev/null || true
     
@@ -1928,7 +1928,7 @@ create_permission_fix_script() {
     
     progress "Erstelle automatisches Berechtigen-Reparatur-Skript..."
     
-    cat > "$fix_script" << 'EOF'
+    cat > "$fix_script" << 'FIXSCRIPTEOF'
 #!/bin/bash
 
 # ===================================================================
@@ -2075,13 +2075,13 @@ fi
 
 # DISPLAY-Variable in bashrc sicherstellen
 if [ -f "$kiosk_home/.bashrc" ] && ! grep -q "export DISPLAY=" "$kiosk_home/.bashrc" 2>/dev/null; then
-    cat >> "$kiosk_home/.bashrc" << 'EOF'
+    cat >> "$kiosk_home/.bashrc" << 'BASHRCEOF'
 
 # X11 Display Konfiguration
 export DISPLAY=:0.0
 export XAUTHORITY=/home/kiosk/.Xauthority
 
-EOF
+BASHRCEOF
     chown "$KIOSK_USER:$KIOSK_USER" "$kiosk_home/.bashrc"
     log "✅ X11-Variablen zu .bashrc hinzugefügt"
 fi
@@ -2098,7 +2098,7 @@ info "  - Als kiosk-User: cd $SCRIPT_DIR && npm install"
 info "  - Als root bei Problemen: sudo $0"
 info ""
 
-EOF
+FIXSCRIPTEOF
 
     # Mache Skript ausführbar
     chmod +x "$fix_script" 2>/dev/null || warning "⚠️ Konnte fix-permissions.sh nicht ausführbar machen"
@@ -2111,7 +2111,7 @@ EOF
     
     progress "Erstelle X11-Reparatur-Skript..."
     
-    cat > "$x11_fix_script" << 'EOF'
+    cat > "$x11_fix_script" << 'X11FIXSCRIPTEOF'
 #!/bin/bash
 
 # ===================================================================
@@ -2195,13 +2195,13 @@ log "Prüfe X11-Umgebungsvariablen..."
 if [ -f "$kiosk_home/.bashrc" ]; then
     if ! grep -q "export DISPLAY=" "$kiosk_home/.bashrc" 2>/dev/null; then
         log "Füge X11-Variablen zu .bashrc hinzu..."
-        cat >> "$kiosk_home/.bashrc" << 'BASHEOF'
+        cat >> "$kiosk_home/.bashrc" << 'BASHEOF2'
 
 # X11 Display Konfiguration
 export DISPLAY=:0.0
 export XAUTHORITY=/home/kiosk/.Xauthority
 
-BASHEOF
+BASHEOF2
         
         if [ "$EUID" -eq 0 ]; then
             chown "$KIOSK_USER:$KIOSK_USER" "$kiosk_home/.bashrc"
@@ -2287,7 +2287,7 @@ info "  - Neustart: sudo reboot"
 info "  - Manual X11 start: startx"
 info ""
 
-EOF
+X11FIXSCRIPTEOF
 
     chmod +x "$x11_fix_script" 2>/dev/null || warning "⚠️ Konnte fix-x11.sh nicht ausführbar machen"