diff --git a/python/tvm/topi/mali/conv2d.py b/python/tvm/topi/mali/conv2d.py
index 62be92cf1927..52fe011a70e9 100644
--- a/python/tvm/topi/mali/conv2d.py
+++ b/python/tvm/topi/mali/conv2d.py
@@ -607,7 +607,7 @@ def conv2d_winograd_nhwc_mali(
 
 ##### SCHECULE UTILITIES #####
 def tile_and_bind(s, tensor, y, x, y_factor, x_factor=None):
-    """ tile and bind to GPU threads """
+    """tile and bind to GPU threads"""
     x_factor = x_factor or y_factor
     yo, xo, yi, xi = s[tensor].tile(y, x, y_factor, x_factor)
     s[tensor].bind(xo, te.thread_axis("blockIdx.x"))
@@ -618,7 +618,7 @@ def tile_and_bind(s, tensor, y, x, y_factor, x_factor=None):
 
 
 def tile_and_bind3d(s, tensor, z, y, x, z_factor=2, y_factor=None, x_factor=None):
-    """ tile and bind 3d """
+    """tile and bind 3d"""
     y_factor = y_factor or z_factor
     x_factor = x_factor or y_factor
     zo, zi = s[tensor].split(z, z_factor)