diff --git a/Compiler/floatingpoint.py b/Compiler/floatingpoint.py
index 4a252ed2d..ca845670e 100644
--- a/Compiler/floatingpoint.py
+++ b/Compiler/floatingpoint.py
@@ -499,7 +499,7 @@ def TruncInRing(to_shift, l, pow2m):
     rev = types.sint.bit_compose(reversed(bits))
     rev <<= n_shift
     rev *= pow2m
-    r_bits = [types.sint.get_random_bit() for i in range(l)]
+    r_bits = [types.sint.get_random_bit(size=rev.size) for i in range(l)]
     r = types.sint.bit_compose(r_bits)
     shifted = (rev - (r << n_shift)).reveal(False)
     masked = shifted >> n_shift
diff --git a/Compiler/types.py b/Compiler/types.py
index f8926be4c..14b0663f8 100644
--- a/Compiler/types.py
+++ b/Compiler/types.py
@@ -3135,6 +3135,7 @@ def int_mod(self, other, bit_length=None):
         """
         return self - other * self.int_div(other, bit_length=bit_length)
 
+    @vectorize
     def trunc_zeros(self, n_zeros, bit_length=None, signed=True):
         bit_length = bit_length or program.bit_length
         return comparison.TruncZeros(self, bit_length, n_zeros, signed)