diff --git a/include/error.h b/include/error.h
index a1d92bc..3f486c3 100644
--- a/include/error.h
+++ b/include/error.h
@@ -139,6 +139,7 @@ typedef enum lm_error {
   LM_ERR_FileHashFail          = 131,
   LM_ERR_FileHashNoMatch       = 132,
   LM_ERR_InfoNotLoaded         = 133,
+  LM_ERR_NoPools               = 134,
 } lm_error_t;
 
 typedef struct lm_error_desc {
diff --git a/locale/tr/LC_MESSAGES/libmp.po b/locale/tr/LC_MESSAGES/libmp.po
index 34bf5fa..7a83c6f 100644
--- a/locale/tr/LC_MESSAGES/libmp.po
+++ b/locale/tr/LC_MESSAGES/libmp.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-07-14 21:05+0300\n"
+"POT-Creation-Date: 2024-07-16 16:03+0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -587,3 +587,7 @@ msgstr ""
 #, fuzzy
 msgid "pool info is not loaded"
 msgstr "URL hostname is too large"
+
+#: src/error.c:159
+msgid "pool list is empty"
+msgstr ""
diff --git a/src/ctx/sync.c b/src/ctx/sync.c
index 5226422..2f79699 100644
--- a/src/ctx/sync.c
+++ b/src/ctx/sync.c
@@ -26,6 +26,16 @@ bool __lm_ctx_sync_callback(char *path, size_t current, size_t total, void *data
 }
 
 size_t lm_ctx_sync(lm_ctx_t *ctx, bool do_update, lm_ctx_sync_callback_t callback, void *data){
+  if(NULL == ctx) {
+    lm_error_set(LM_ERR_ArgNULL);
+    return -1;
+  }
+
+  if(NULL == ctx->pools){
+    lm_error_set(LM_ERR_NoPools);
+    return -1;
+  }
+
   struct __lm_ctx_sync_cb_data cbdata = {
     .ctx = ctx,
     .callback = callback,
@@ -41,6 +51,7 @@ size_t lm_ctx_sync(lm_ctx_t *ctx, bool do_update, lm_ctx_sync_callback_t callbac
 
     if(lm_pool_path_is_empty(cur)){
       pdebug(__func__, "(%s) failed to load info, pool paths are empty", cur->name);
+      lm_error_set(LM_ERR_PoolPathsEmpty);
       goto next_info;
     }
 
diff --git a/src/error.c b/src/error.c
index 2d3c685..34932e1 100644
--- a/src/error.c
+++ b/src/error.c
@@ -156,6 +156,7 @@ void lm_error_set(lm_error_t code, ...) {
       {.code = LM_ERR_FileHashFail,            .desc = _("failed to get hash of %s: %s")                              },
       {.code = LM_ERR_FileHashNoMatch,         .desc = _("file hash does not match for %s")                           },
       {.code = LM_ERR_InfoNotLoaded,           .desc = _("pool info is not loaded")                                   },
+      {.code = LM_ERR_NoPools,                 .desc = _("pool list is empty")                                        },
   };
 
   char *fmt     = NULL;