diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0d110ea2c..ebe6119fb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -83,6 +83,7 @@ BUG FIXES:
   - provisioners/shell: Retry getting SSH info a few times. [GH-3924]
   - provisioners/shell: PowerShell scripts can have args. [GH-4548]
   - synced\_folders/nfs: Don't modify NFS exports file if no exports. [GH-4619]
+  - synced\_folders/nfs: Prune exports for file path IDs. [GH-3815]
 
 PLUGIN AUTHOR CHANGES:
 
diff --git a/plugins/hosts/bsd/cap/nfs.rb b/plugins/hosts/bsd/cap/nfs.rb
index 6042320ae..b154ad19c 100644
--- a/plugins/hosts/bsd/cap/nfs.rb
+++ b/plugins/hosts/bsd/cap/nfs.rb
@@ -137,7 +137,7 @@ module VagrantPlugins
           user = Process.uid
 
           File.read("/etc/exports").lines.each do |line|
-            if id = line[/^# VAGRANT-BEGIN:( #{user})? ([A-Za-z0-9-]+?)$/, 2]
+            if id = line[/^# VAGRANT-BEGIN:( #{user})? ([\.\/A-Za-z0-9-_]+?)$/, 2]
               if valid_ids.include?(id)
                 logger.debug("Valid ID: #{id}")
               else
diff --git a/plugins/hosts/linux/cap/nfs.rb b/plugins/hosts/linux/cap/nfs.rb
index 1216ce04f..c5435fff5 100644
--- a/plugins/hosts/linux/cap/nfs.rb
+++ b/plugins/hosts/linux/cap/nfs.rb
@@ -71,7 +71,7 @@ module VagrantPlugins
           user = Process.uid
 
           File.read("/etc/exports").lines.each do |line|
-            if id = line[/^# VAGRANT-BEGIN:( #{user})? ([A-Za-z0-9-]+?)$/, 2]
+            if id = line[/^# VAGRANT-BEGIN:( #{user})? ([\.\/A-Za-z0-9-_]+?)$/, 2]
               if valid_ids.include?(id)
                 logger.debug("Valid ID: #{id}")
               else