diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index 765c8e34..91e81d9c 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -2512,7 +2512,7 @@ static size_t ZSTD_loadDictionaryContent(ZSTD_CCtx* zc, const void* src, size_t
         return ERROR(GENERIC);   /* strategy doesn't exist; impossible */
     }
 
-    zc->nextToUpdate = zc->loadedDictEnd;
+    zc->nextToUpdate = (U32)(iend - zc->base);
     return 0;
 }