diff --git a/src/pystencils/backend/kernelcreation/typification.py b/src/pystencils/backend/kernelcreation/typification.py
index 284e80b9d718538f7960e099cc2a2dfbb257d34d..3ca0a16e24753506e0446fdf41305c321ee17ebd 100644
--- a/src/pystencils/backend/kernelcreation/typification.py
+++ b/src/pystencils/backend/kernelcreation/typification.py
@@ -50,7 +50,7 @@ from ..ast.expressions import (
     PsNot,
 )
 from ..ast.vector import PsVecBroadcast, PsVecMemAcc, PsVecHorizontal
-from ..functions import PsMathFunction, CFunction, PsReductionFunction
+from ..functions import PsMathFunction, CFunction
 from ..ast.util import determine_memory_object
 from ..exceptions import TypificationError
 
diff --git a/src/pystencils/backend/platforms/cuda.py b/src/pystencils/backend/platforms/cuda.py
index 1f6506c8f69a61b7822c21b6068c74164c4ff29f..6df502c1f7d70765bc132230fe88cda7c400e706 100644
--- a/src/pystencils/backend/platforms/cuda.py
+++ b/src/pystencils/backend/platforms/cuda.py
@@ -5,8 +5,6 @@ import operator
 from abc import ABC, abstractmethod
 from functools import reduce
 
-from pystencils.types import PsBoolType
-
 from ..ast import PsAstNode
 from ..constants import PsConstant
 from ...compound_op_mapping import compound_op_to_expr
@@ -38,8 +36,7 @@ from ..ast.expressions import (
 from ..ast.expressions import PsLt, PsAnd
 from ...types import PsSignedIntegerType, PsIeeeFloatType
 from ..literals import PsLiteral
-from ..functions import PsMathFunction, MathFunctions, CFunction, PsReductionFunction, ReductionFunctions, \
-    NumericLimitsFunctions
+from ..functions import MathFunctions, CFunction, ReductionFunctions, NumericLimitsFunctions
 
 
 int32 = PsSignedIntegerType(width=32, const=False)
diff --git a/src/pystencils/backend/platforms/generic_cpu.py b/src/pystencils/backend/platforms/generic_cpu.py
index 24692b25c9e76dc470a0432110e9a3031e3f6b2f..3ffdfa22f0c6f6906bc44a55609c3fd6fb177132 100644
--- a/src/pystencils/backend/platforms/generic_cpu.py
+++ b/src/pystencils/backend/platforms/generic_cpu.py
@@ -21,7 +21,7 @@ from ..kernelcreation.iteration_space import (
 )
 
 from ..constants import PsConstant
-from ..ast.structural import PsDeclaration, PsLoop, PsBlock, PsAssignment
+from ..ast.structural import PsDeclaration, PsLoop, PsBlock
 from ..ast.expressions import (
     PsSymbolExpr,
     PsExpression,