diff --git a/libs/libc/stdio/lib_libvsprintf.c b/libs/libc/stdio/lib_libvsprintf.c
index c331d81569..3df402d7e9 100644
--- a/libs/libc/stdio/lib_libvsprintf.c
+++ b/libs/libc/stdio/lib_libvsprintf.c
@@ -1018,7 +1018,11 @@ str_lpad:
           flags &= ~(FL_NEGATIVE | FL_ALT);
           if (x < 0)
             {
-              x = -x;
+#ifndef CONFIG_HAVE_LONG_LONG
+              x = -(unsigned long)x;
+#else
+              x = -(unsigned long long)x;
+#endif
               flags |= FL_NEGATIVE;
             }