diff --git a/pystencils/integer_functions.py b/pystencils/integer_functions.py
index 4e583d9ab53469deef93c665c26876ae08364f4a..e06c9d5e8ae2d08c6d32032063d454425b552d1a 100644
--- a/pystencils/integer_functions.py
+++ b/pystencils/integer_functions.py
@@ -3,13 +3,13 @@ import sympy as sp
 from pystencils.data_types import collate_types, get_type_of_expression
 from pystencils.sympyextensions import is_integer_sequence
 
-bitwise_xor = sp.Function("bitwise_xor")
-bit_shift_right = sp.Function("bit_shift_right")
-bit_shift_left = sp.Function("bit_shift_left")
-bitwise_and = sp.Function("bitwise_and")
-bitwise_or = sp.Function("bitwise_or")
-int_div = sp.Function("int_div")
-int_power_of_2 = sp.Function("int_power_of_2")
+bitwise_xor = sp.Function("bitwise_xor", integer=True)
+bit_shift_right = sp.Function("bit_shift_right", integer=True)
+bit_shift_left = sp.Function("bit_shift_left", integer=True)
+bitwise_and = sp.Function("bitwise_and", integer=True)
+bitwise_or = sp.Function("bitwise_or", integer=True)
+int_div = sp.Function("int_div", integer=True)
+int_power_of_2 = sp.Function("int_power_of_2", integer=True)
 
 
 # noinspection PyPep8Naming
@@ -29,6 +29,7 @@ class modulo_floor(sp.Function):
         '(int64_t)((a) / (b)) * (b)'
     """
     nargs = 2
+    integer = True
 
     def __new__(cls, integer, divisor):
         if is_integer_sequence((integer, divisor)):
@@ -60,6 +61,7 @@ class modulo_ceil(sp.Function):
         '((a) % (b) == 0 ? a : ((int64_t)((a) / (b))+1) * (b))'
     """
     nargs = 2
+    integer = True
 
     def __new__(cls, integer, divisor):
         if is_integer_sequence((integer, divisor)):
@@ -89,6 +91,7 @@ class div_ceil(sp.Function):
         '( (a) % (b) == 0 ? (int64_t)(a) / (int64_t)(b) : ( (int64_t)(a) / (int64_t)(b) ) +1 )'
     """
     nargs = 2
+    integer = True
 
     def __new__(cls, integer, divisor):
         if is_integer_sequence((integer, divisor)):
@@ -118,6 +121,7 @@ class div_floor(sp.Function):
         '((int64_t)(a) / (int64_t)(b))'
     """
     nargs = 2
+    integer = True
 
     def __new__(cls, integer, divisor):
         if is_integer_sequence((integer, divisor)):