diff --git a/src/tools/qlocale.cpp b/src/tools/qlocale.cpp
index d79872ef7..16735d53b 100644
--- a/src/tools/qlocale.cpp
+++ b/src/tools/qlocale.cpp
@@ -4430,7 +4430,7 @@ static int lo0bits(ULong *y)
     if (!(x & 1)) {
         k++;
         x >>= 1;
-        if (!x & 1)
+        if (!x) // At this point x is zero if and only if the *y was zero
             return 32;
     }
     *y = x;