diff --git a/OpenCL/m17230_a0-pure.cl b/OpenCL/m17230_a0-pure.cl
index df4f6bb26..bec98b9a2 100644
--- a/OpenCL/m17230_a0-pure.cl
+++ b/OpenCL/m17230_a0-pure.cl
@@ -363,7 +363,7 @@ KERNEL_FQ void m17230_sxx (KERN_ATTR_RULES_ESALT (pkzip_t))
 
       update_key3 (key2, key3);
       plain = unpack_v8a_from_v32_S (next) ^ key3;
-      if ((plain & 6) == 0 || (plain & 6) == 6) break;
+      if (esalt_bufs[digests_offset].hashes[idx].compression_type == 8 && ((plain & 6) == 0 || (plain & 6) == 6)) break;
 
       if (idx + 1 == esalt_bufs[digests_offset].hash_count)
       {
@@ -533,7 +533,7 @@ KERNEL_FQ void m17230_mxx (KERN_ATTR_RULES_ESALT (pkzip_t))
 
       update_key3 (key2, key3);
       plain = unpack_v8a_from_v32_S (next) ^ key3;
-      if ((plain & 6) == 0 || (plain & 6) == 6) break;
+      if (esalt_bufs[digests_offset].hashes[idx].compression_type == 8 && ((plain & 6) == 0 || (plain & 6) == 6)) break;
 
       if (idx + 1 == esalt_bufs[digests_offset].hash_count)
       {
diff --git a/OpenCL/m17230_a1-pure.cl b/OpenCL/m17230_a1-pure.cl
index 0a880847f..37820e532 100644
--- a/OpenCL/m17230_a1-pure.cl
+++ b/OpenCL/m17230_a1-pure.cl
@@ -363,7 +363,7 @@ KERNEL_FQ void m17230_sxx (KERN_ATTR_ESALT (pkzip_t))
 
       update_key3 (key2, key3);
       plain = unpack_v8a_from_v32_S (next) ^ key3;
-      if ((plain & 6) == 0 || (plain & 6) == 6) break;
+      if (esalt_bufs[digests_offset].hashes[idx].compression_type == 8 && ((plain & 6) == 0 || (plain & 6) == 6)) break;
 
       if (idx + 1 == esalt_bufs[digests_offset].hash_count)
       {
@@ -535,7 +535,7 @@ KERNEL_FQ void m17230_mxx (KERN_ATTR_ESALT (pkzip_t))
 
       update_key3 (key2, key3);
       plain = unpack_v8a_from_v32_S (next) ^ key3;
-      if ((plain & 6) == 0 || (plain & 6) == 6) break;
+      if (esalt_bufs[digests_offset].hashes[idx].compression_type == 8 && ((plain & 6) == 0 || (plain & 6) == 6)) break;
 
       if (idx + 1 == esalt_bufs[digests_offset].hash_count)
       {
diff --git a/OpenCL/m17230_a3-pure.cl b/OpenCL/m17230_a3-pure.cl
index c4ac6c864..2e34dd3e9 100644
--- a/OpenCL/m17230_a3-pure.cl
+++ b/OpenCL/m17230_a3-pure.cl
@@ -377,7 +377,7 @@ KERNEL_FQ void m17230_sxx (KERN_ATTR_VECTOR_ESALT (pkzip_t))
 
       update_key3 (key2, key3);
       plain = unpack_v8a_from_v32_S (next) ^ key3;
-      if ((plain & 6) == 0 || (plain & 6) == 6) break;
+      if (esalt_bufs[digests_offset].hashes[idx].compression_type == 8 && ((plain & 6) == 0 || (plain & 6) == 6)) break;
 
       if (idx + 1 == hash_count)
       {
@@ -563,7 +563,7 @@ KERNEL_FQ void m17230_mxx (KERN_ATTR_VECTOR_ESALT (pkzip_t))
 
       update_key3 (key2, key3);
       plain = unpack_v8a_from_v32_S (next) ^ key3;
-      if ((plain & 6) == 0 || (plain & 6) == 6) break;
+      if (esalt_bufs[digests_offset].hashes[idx].compression_type == 8 && ((plain & 6) == 0 || (plain & 6) == 6)) break;
 
       if (idx + 1 == esalt_bufs[digests_offset].hash_count)
       {
diff --git a/src/modules/module_17230.c b/src/modules/module_17230.c
index 649996f45..6bef2bf24 100644
--- a/src/modules/module_17230.c
+++ b/src/modules/module_17230.c
@@ -251,7 +251,7 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
     p = strtok(NULL, "*");
     if (p == NULL) return PARSER_HASH_LENGTH;
     pkzip->hashes[i].compression_type = atoi(p);
-    if (pkzip->hashes[i].compression_type != 8) return PARSER_PKZIP_CT_UNMATCHED;
+    if (pkzip->hashes[i].compression_type != 8 && pkzip->hashes[i].compression_type != 0) return PARSER_PKZIP_CT_UNMATCHED;
 
     p = strtok(NULL, "*");
     if (p == NULL) return PARSER_HASH_LENGTH;