diff --git a/templates/index.html b/templates/index.html
index 6b146cb..53a44d5 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -8840,9 +8840,13 @@
             <div style="margin-top: 20px; padding-top: 15px; border-top: 1px solid var(--border-color);">
                 <h3 style="margin-bottom: 10px;">Quick Install (Debian/Ubuntu)</h3>
                 <div style="background: var(--bg-tertiary); padding: 10px; border-radius: 4px; font-family: monospace; font-size: 11px; overflow-x: auto;">
-                    <div>sudo apt install rtl-sdr multimon-ng rtl-433 aircrack-ng bluez dump1090-mutability hcxtools</div>
+                    <div>sudo apt install rtl-sdr multimon-ng rtl-433 aircrack-ng bluez dump1090-mutability hcxdumptool hcxtools</div>
                     <div style="margin-top: 5px;">pip install skyfield flask</div>
                 </div>
+                <div style="margin-top: 10px; font-size: 11px; color: var(--text-dim);">
+                    <strong>Note:</strong> ACARS decoding requires <code>acarsdec</code> which must be built from source.
+                    See <a href="https://github.com/TLeconte/acarsdec" target="_blank" style="color: var(--accent-cyan);">github.com/TLeconte/acarsdec</a> or run <code>./setup.sh</code> for automated installation.
+                </div>
             </div>
         </div>
     </div>
diff --git a/utils/dependencies.py b/utils/dependencies.py
index adf7e56..7d5b48b 100644
--- a/utils/dependencies.py
+++ b/utils/dependencies.py
@@ -7,8 +7,8 @@ from typing import Any
 
 logger = logging.getLogger('intercept.dependencies')
 
-# Additional paths to search for tools (e.g., /usr/sbin on Debian, /opt/local/bin for MacPorts)
-EXTRA_TOOL_PATHS = ['/usr/sbin', '/sbin', '/opt/local/bin', '/opt/local/sbin']
+# Additional paths to search for tools (e.g., /usr/sbin on Debian)
+EXTRA_TOOL_PATHS = ['/usr/sbin', '/sbin']
 
 
 def check_tool(name: str) -> bool:
@@ -51,8 +51,8 @@ TOOL_DEPENDENCIES = {
                 'description': 'Digital transmission decoder',
                 'install': {
                     'apt': 'sudo apt install multimon-ng',
-                    'brew': 'sudo port install multimon-ng (MacPorts) or build from source',
-                    'manual': 'https://github.com/EliasOewornal/multimon-ng'
+                    'brew': 'brew install multimon-ng',
+                    'manual': 'https://github.com/EliasOenal/multimon-ng'
                 }
             },
             'rtl_test': {
@@ -202,8 +202,8 @@ TOOL_DEPENDENCIES = {
                 'required': True,
                 'description': 'ACARS VHF decoder',
                 'install': {
-                    'apt': 'sudo apt install acarsdec',
-                    'brew': 'brew install acarsdec',
+                    'apt': 'Build from source (not in apt repos)',
+                    'brew': 'Build from source',
                     'manual': 'https://github.com/TLeconte/acarsdec'
                 }
             }