diff --git a/src/orca/debug.py b/src/orca/debug.py
index eb939a236..4e4db2e84 100644
--- a/src/orca/debug.py
+++ b/src/orca/debug.py
@@ -522,7 +522,7 @@ def traceit(frame, event, arg):
     return traceit
 
 def getOpenFDCount(pid):
-    procs = subprocess.check_output([ 'lsof', '-w', '-Ff', '-p', str(pid)])
+    procs = subprocess.check_output([ '@lsof@', '-w', '-Ff', '-p', str(pid)])
     procs = procs.decode('UTF-8').split('\n')
     files = list(filter(lambda s: s and s[0] == 'f' and s[1:].isdigit(), procs))
 
@@ -540,7 +540,7 @@ def getCmdline(pid):
     return cmdline
 
 def pidOf(procName):
-    openFile = subprocess.Popen(f'pgrep {procName}',
+    openFile = subprocess.Popen(f'@pgrep@ {procName}',
                                 shell=True,
                                 stdout=subprocess.PIPE).stdout
     pids = openFile.read()
diff --git a/src/orca/orca_bin.py.in b/src/orca/orca_bin.py.in
index c6f99de14..2370204f3 100755
--- a/src/orca/orca_bin.py.in
+++ b/src/orca/orca_bin.py.in
@@ -62,7 +62,7 @@ class ListApps(argparse.Action):
                 name = "[DEAD]"
 
             try:
-                cmdline = subprocess.getoutput('cat /proc/%s/cmdline' % pid)
+                cmdline = subprocess.getoutput('@cat@ /proc/%s/cmdline' % pid)
             except Exception:
                 cmdline = '(exception encountered)'
             else:
@@ -195,7 +195,7 @@ def inGraphicalDesktop():
 def otherOrcas():
     """Returns the pid of any other instances of Orca owned by this user."""
 
-    openFile = subprocess.Popen('pgrep -u %s -x orca' % os.getuid(),
+    openFile = subprocess.Popen('@pgrep@ -u %s -x orca' % os.getuid(),
                                 shell=True,
                                 stdout=subprocess.PIPE).stdout
     pids = openFile.read()
diff --git a/src/orca/orca_modifier_manager.py b/src/orca/orca_modifier_manager.py
index c45cd4a5b..3f2ec59f0 100644
--- a/src/orca/orca_modifier_manager.py
+++ b/src/orca/orca_modifier_manager.py
@@ -115,7 +115,7 @@ class OrcaModifierManager:
         debug.printMessage(debug.LEVEL_INFO, msg, True)
 
         self.unset_orca_modifiers(reason)
-        self._original_xmodmap = subprocess.check_output(['xkbcomp', os.environ['DISPLAY'], '-'])
+        self._original_xmodmap = subprocess.check_output(['@xkbcomp@', os.environ['DISPLAY'], '-'])
         self._create_orca_xmodmap()
 
     def update_key_map(self, keyboard_event):
@@ -162,7 +162,7 @@ class OrcaModifierManager:
             return
 
         self._caps_lock_cleared = False
-        p = subprocess.Popen(['xkbcomp', '-w0', '-', os.environ['DISPLAY']],
+        p = subprocess.Popen(['@xkbcomp@', '-w0', '-', os.environ['DISPLAY']],
             stdin=subprocess.PIPE, stdout=None, stderr=None)
         p.communicate(self._original_xmodmap)
 
@@ -223,7 +223,7 @@ class OrcaModifierManager:
         if modified:
             msg = "ORCA MODIFIER MANAGER: Updating xmodmap"
             debug.printMessage(debug.LEVEL_INFO, msg, True)
-            p = subprocess.Popen(['xkbcomp', '-w0', '-', os.environ['DISPLAY']],
+            p = subprocess.Popen(['@xkbcomp@', '-w0', '-', os.environ['DISPLAY']],
                 stdin=subprocess.PIPE, stdout=None, stderr=None)
             p.communicate(bytes('\n'.join(lines), 'UTF-8'))
         else: