diff --git a/src/repository/api/ArcanistSubversionAPI.php b/src/repository/api/ArcanistSubversionAPI.php
index f247b238..2f757639 100644
--- a/src/repository/api/ArcanistSubversionAPI.php
+++ b/src/repository/api/ArcanistSubversionAPI.php
@@ -644,18 +644,25 @@ EODIFF;
   }
 
   public static function escapeFileNamesForSVN(array $files) {
+    foreach ($files as $k => $file) {
+      $files[$k] = self::escapeFileNameForSVN($file);
+    }
+    return $files;
+  }
+
+  public static function escapeFileNameForSVN($file) {
     // SVN interprets "x@1" as meaning "file x at revision 1", which is not
     // intended for files named "sprite@2x.png" or similar. For files with an
     // "@" in their names, escape them by adding "@" at the end, which SVN
     // interprets as "at the working copy revision". There is a special case
     // where ".@" means "fail with an error" instead of ". at the working copy
     // revision", so avoid escaping "." into ".@".
-    foreach ($files as $k => $file) {
-      if (strpos($file, '@') !== false) {
-        $files[$k] = $file.'@';
-      }
+
+    if (strpos($file, '@') !== false) {
+      $file = $file.'@';
     }
-    return $files;
+
+    return $file;
   }
 
 }
diff --git a/src/workflow/ArcanistPatchWorkflow.php b/src/workflow/ArcanistPatchWorkflow.php
index e9fa45a9..a8eab2b6 100644
--- a/src/workflow/ArcanistPatchWorkflow.php
+++ b/src/workflow/ArcanistPatchWorkflow.php
@@ -578,8 +578,8 @@ EOTEXT
           csprintf(
             '(cd %s; svn cp %s %s)',
             $repository_api->getPath(),
-            $src,
-            $dst));
+            ArcanistSubversionAPI::escapeFileNameForSVN($src),
+            ArcanistSubversionAPI::escapeFileNameForSVN($dst)));
       }
 
       foreach ($deletes as $delete) {
@@ -587,7 +587,7 @@ EOTEXT
           csprintf(
             '(cd %s; svn rm %s)',
             $repository_api->getPath(),
-            $delete));
+            ArcanistSubversionAPI::escapeFileNameForSVN($delete)));
       }
 
       foreach ($symlinks as $symlink) {
@@ -636,7 +636,7 @@ EOTEXT
           csprintf(
             '(cd %s; svn add %s)',
             $repository_api->getPath(),
-            $add));
+            ArcanistSubversionAPI::escapeFileNameForSVN($add)));
       }
 
       foreach ($propset as $path => $changes) {
@@ -652,7 +652,7 @@ EOTEXT
                 '(cd %s; svn propdel %s %s)',
                 $repository_api->getPath(),
                 $prop,
-                $path));
+                ArcanistSubversionAPI::escapeFileNameForSVN($path)));
           } else {
             passthru(
               csprintf(
@@ -660,7 +660,7 @@ EOTEXT
                 $repository_api->getPath(),
                 $prop,
                 $value,
-                $path));
+                ArcanistSubversionAPI::escapeFileNameForSVN($path)));
           }
         }
       }