diff --git a/src/filesystem/filesystem.c b/src/filesystem/filesystem.c
index 9b44110c..b94e41ed 100644
--- a/src/filesystem/filesystem.c
+++ b/src/filesystem/filesystem.c
@@ -127,7 +127,7 @@ const char* lovrFilesystemGetSaveDirectory() {
 int lovrFilesystemGetSize(const char* path) {
   PHYSFS_file* handle = PHYSFS_openRead(path);
   if (!handle) {
-    return 1;
+    return -1;
   }
 
   int length = PHYSFS_fileLength(handle);
@@ -210,12 +210,10 @@ int lovrFilesystemSetIdentity(const char* identity) {
     }
   }
 
-  const char* sep = PHYSFS_getDirSeparator();
-
   lovrFilesystemGetAppdataDirectory(state.savePathFull, LOVR_PATH_MAX);
   PHYSFS_setWriteDir(state.savePathFull);
-  snprintf(state.savePathRelative, LOVR_PATH_MAX, "LOVR%s%s", sep, identity);
-  snprintf(state.savePathFull, LOVR_PATH_MAX, "%s%s%s", state.savePathFull, sep, state.savePathRelative);
+  snprintf(state.savePathRelative, LOVR_PATH_MAX, "LOVR/%s", identity);
+  snprintf(state.savePathFull, LOVR_PATH_MAX, "%s/%s", state.savePathFull, state.savePathRelative);
   PHYSFS_mkdir(state.savePathRelative);
   if (!PHYSFS_setWriteDir(state.savePathFull)) {
     error("Could not set write directory");