diff --git a/pwndbg/commands/shell.py b/pwndbg/commands/shell.py
index ef09ab00c..c3c82accc 100644
--- a/pwndbg/commands/shell.py
+++ b/pwndbg/commands/shell.py
@@ -18,7 +18,6 @@ shellcmds = [
     "clear",
     "cp",
     "date",
-    "dd",
     "diff",
     "egrep",
     "find",
diff --git a/pwndbg/commands/windbg.py b/pwndbg/commands/windbg.py
index 4c91d2671..9b4cb7166 100644
--- a/pwndbg/commands/windbg.py
+++ b/pwndbg/commands/windbg.py
@@ -56,7 +56,7 @@ def dX(size, address, count, to_string=False):
         except gdb.MemoryError:
             break
 
-    n_rows = math.ceil(count * size / float(16))
+    n_rows = int(math.ceil(count * size / float(16)))
     row_sz = int(16 / size)
     rows   = [values[i*row_sz:(i+1)*row_sz] for i in range(n_rows)]
     lines  = []