diff --git a/hate_crack.py b/hate_crack.py
index 003f425..fc0310e 100755
--- a/hate_crack.py
+++ b/hate_crack.py
@@ -322,7 +322,7 @@ def hcatHoldenCombinator(hcatHashType, hcatHashFile):
 
     for x in range(len(numbers)):
         hcatProcess = subprocess.Popen(
-          "{hcatBin} -m {hash_type} {hash_file} --remove -o {hash_file}.out -a 1 -j '${middle_mask}' {word_lists}/rockyou.txt "
+          "{hcatBin} -m {hash_type} {hash_file} --remove -o {hash_file}.out -a 1 -j \'${middle_mask}\' {word_lists}/rockyou.txt "
           "{word_lists}/rockyou.txt {tuning} --potfile-path={hate_path}/hashcat.pot".format(
                 hcatBin=hcatBin,
                 hash_type=hcatHashType,