diff --git a/src/hashcat.c b/src/hashcat.c
index f60fa32fc..85260054b 100644
--- a/src/hashcat.c
+++ b/src/hashcat.c
@@ -5537,7 +5537,7 @@ static void *thread_calc (void *p)
       u64 words_off = 0;
       u64 words_fin = 0;
 
-      u64 max = -1u;
+      u64 max = -1llu;
 
       while (max)
       {
diff --git a/src/shared.c b/src/shared.c
index 9fd8d70b6..90eaf4a83 100644
--- a/src/shared.c
+++ b/src/shared.c
@@ -9578,7 +9578,7 @@ void read_restore (const char *eff_restore_file, restore_data_t *rd)
 
 u64 get_lowest_words_done ()
 {
-  u64 words_cur = -1u;
+  u64 words_cur = -1llu;
 
   for (uint device_id = 0; device_id < data.devices_cnt; device_id++)
   {