diff --git a/app/scripts/fetch_xulrunner b/app/scripts/fetch_xulrunner
index c3e9701c29..71cc5b41bc 100755
--- a/app/scripts/fetch_xulrunner
+++ b/app/scripts/fetch_xulrunner
@@ -162,6 +162,9 @@ function modify_omni {
 	# Disable unwanted components
 	remove_line '(RemoteSettings|services-|telemetry|Telemetry|URLDecorationAnnotationsService)' components/components.manifest
 	
+	# Ignore relative paths in PATH in Subprocess.pathSearch(), used when bare command is passed to Utilities.Internal.subprocess()
+	replace_line 'let path = PathUtils.join\(dir, bin\);' 'if (!dir.startsWith("\/")) continue; let path = PathUtils.join(dir, bin);' modules/subprocess/subprocess_unix.sys.mjs
+	
 	# Remove unwanted files
 	rm modules/FxAccounts*
 	# Causes a startup error -- try an empty file or a shim instead?