diff --git a/lib/resolvers/utils/filesystem_helper.rb b/lib/resolvers/utils/filesystem_helper.rb
index f52f514d4..b5911f203 100644
--- a/lib/resolvers/utils/filesystem_helper.rb
+++ b/lib/resolvers/utils/filesystem_helper.rb
@@ -5,24 +5,36 @@ module FilesystemHelper
     MOUNT_KEYS = %i[device filesystem path options
                     available available_bytes size
                     size_bytes used used_bytes capacity].freeze
+    class << self
+      def read_mountpoints
+        require 'sys/filesystem'
+        force_utf(Sys::Filesystem.mounts)
+      end
 
-    def self.read_mountpoints
-      require 'sys/filesystem'
-      Sys::Filesystem.mounts
-    end
+      def read_mountpoint_stats(path)
+        require 'sys/filesystem'
+        Sys::Filesystem.stat(path)
+      end
 
-    def self.read_mountpoint_stats(path)
-      require 'sys/filesystem'
-      Sys::Filesystem.stat(path)
-    end
+      def compute_capacity(used, total)
+        if used == total
+          '100%'
+        elsif used.positive?
+          "#{format('%.2f', 100.0 * used.to_f / total.to_f)}%"
+        else
+          '0%'
+        end
+      end
+
+      private
 
-    def self.compute_capacity(used, total)
-      if used == total
-        '100%'
-      elsif used.positive?
-        "#{format('%.2f', 100.0 * used.to_f / total.to_f)}%"
-      else
-        '0%'
+      def force_utf(mounts)
+        mounts.each do |mount|
+          mount.name.force_encoding('UTF-8')
+          mount.mount_type.force_encoding('UTF-8')
+          mount.mount_point.force_encoding('UTF-8')
+          mount.options.force_encoding('UTF-8')
+        end
       end
     end
   end
diff --git a/spec/facter/resolvers/mountpoints_resolver_spec.rb b/spec/facter/resolvers/mountpoints_resolver_spec.rb
index f5cb103a6..1568965a9 100644
--- a/spec/facter/resolvers/mountpoints_resolver_spec.rb
+++ b/spec/facter/resolvers/mountpoints_resolver_spec.rb
@@ -37,8 +37,9 @@
     allow(Facter::Util::FileHelper).to receive(:safe_read)
       .with('/proc/cmdline')
       .and_return(load_fixture('cmdline_root_device').read)
-    allow(Sys::Filesystem).to receive(:mounts).and_return([mount])
-    allow(Sys::Filesystem).to receive(:stat).with(mount.mount_point).and_return(stat)
+
+    allow(Facter::FilesystemHelper).to receive(:read_mountpoints).and_return([mount])
+    allow(Facter::FilesystemHelper).to receive(:read_mountpoint_stats).with(mount.mount_point).and_return(stat)
 
     # mock sys/filesystem methods
     allow(stat).to receive(:bytes_total).and_return(stat.blocks * stat.fragment_size)
@@ -55,7 +56,8 @@
   end
 
   it 'drops automounts and non-tmpfs mounts under /proc or /sys' do
-    allow(Sys::Filesystem).to receive(:mounts).and_return(ignored_mounts)
+    allow(Facter::FilesystemHelper).to receive(:read_mountpoints).and_return(ignored_mounts)
+
     result = Facter::Resolvers::Linux::Mountpoints.resolve(:mountpoints)
     expect(result).to be_empty
   end
diff --git a/spec/facter/resolvers/utils/macosx/filesystem_helper_spec.rb b/spec/facter/resolvers/utils/macosx/filesystem_helper_spec.rb
index 91e73a7f3..2e32bcab3 100644
--- a/spec/facter/resolvers/utils/macosx/filesystem_helper_spec.rb
+++ b/spec/facter/resolvers/utils/macosx/filesystem_helper_spec.rb
@@ -17,4 +17,35 @@
       expect(capacity).to eq('4.21%')
     end
   end
+
+  describe '#read_mountpoints' do
+    before do
+      mount = OpenStruct.new
+      mount.name = +'test_name'.encode('ASCII-8BIT')
+      mount.mount_type = +'test_type'.encode('ASCII-8BIT')
+      mount.mount_point = +'test_mount_point'.encode('ASCII-8BIT')
+      mount.options = +'test_options'.encode('ASCII-8BIT')
+
+      mounts = [mount]
+      allow(Sys::Filesystem).to receive(:mounts).and_return(mounts)
+    end
+
+    let(:mount_points) { Facter::FilesystemHelper.read_mountpoints }
+
+    it 'converts name from ASCII-8BIT to UTF-8' do
+      expect(mount_points.first.name.encoding.name). to eq('UTF-8')
+    end
+
+    it 'converts mount_type from ASCII-8BIT to UTF-8' do
+      expect(mount_points.first.mount_type.encoding.name). to eq('UTF-8')
+    end
+
+    it 'converts mount_point from ASCII-8BIT to UTF-8' do
+      expect(mount_points.first.mount_point.encoding.name). to eq('UTF-8')
+    end
+
+    it 'converts options from ASCII-8BIT to UTF-8' do
+      expect(mount_points.first.options.encoding.name). to eq('UTF-8')
+    end
+  end
 end