diff --git a/applications/main/nfc/helpers/protocol_support/iso15693_3/iso15693_3_render.c b/applications/main/nfc/helpers/protocol_support/iso15693_3/iso15693_3_render.c
index ba8f10b93..fbf331d3b 100644
--- a/applications/main/nfc/helpers/protocol_support/iso15693_3/iso15693_3_render.c
+++ b/applications/main/nfc/helpers/protocol_support/iso15693_3/iso15693_3_render.c
@@ -37,11 +37,13 @@ void nfc_render_iso15693_3_brief(const Iso15693_3Data* data, FuriString* str) {
 }
 
 void nfc_render_iso15693_3_system_info(const Iso15693_3Data* data, FuriString* str) {
-    if(data->system_info.flags & ISO15693_3_SYSINFO_FLAG_MEMORY) {
+    const uint16_t block_count = iso15693_3_get_block_count(data);
+    const uint8_t block_size = iso15693_3_get_block_size(data);
+
+    if((data->system_info.flags & ISO15693_3_SYSINFO_FLAG_MEMORY) &&
+       (block_count > 0 && block_size > 0)) {
         furi_string_cat(str, "\e#Memory data\n\e*--------------------\n");
 
-        const uint16_t block_count = iso15693_3_get_block_count(data);
-        const uint8_t block_size = iso15693_3_get_block_size(data);
         const uint16_t display_block_count =
             MIN(NFC_RENDER_ISO15693_3_MAX_BYTES / block_size, block_count);
 
diff --git a/lib/nfc/protocols/iso15693_3/iso15693_3.c b/lib/nfc/protocols/iso15693_3/iso15693_3.c
index e2628b258..802d87f03 100644
--- a/lib/nfc/protocols/iso15693_3/iso15693_3.c
+++ b/lib/nfc/protocols/iso15693_3/iso15693_3.c
@@ -173,33 +173,35 @@ bool iso15693_3_load(Iso15693_3Data* data, FlipperFormat* ff, uint32_t version)
 
         if(flipper_format_key_exist(ff, ISO15693_3_BLOCK_COUNT_KEY) &&
            flipper_format_key_exist(ff, ISO15693_3_BLOCK_SIZE_KEY)) {
+            data->system_info.flags |= ISO15693_3_SYSINFO_FLAG_MEMORY;
+
             uint32_t block_count;
             if(!flipper_format_read_uint32(ff, ISO15693_3_BLOCK_COUNT_KEY, &block_count, 1)) break;
-
             data->system_info.block_count = block_count;
-            data->system_info.flags |= ISO15693_3_SYSINFO_FLAG_MEMORY;
 
             if(!flipper_format_read_hex(
                    ff, ISO15693_3_BLOCK_SIZE_KEY, &(data->system_info.block_size), 1))
                 break;
 
-            simple_array_init(
-                data->block_data, data->system_info.block_size * data->system_info.block_count);
-
-            if(!flipper_format_read_hex(
-                   ff,
-                   ISO15693_3_DATA_CONTENT_KEY,
-                   simple_array_get_data(data->block_data),
-                   simple_array_get_count(data->block_data)))
-                break;
-
-            if(flipper_format_key_exist(ff, ISO15693_3_SECURITY_STATUS_KEY)) {
+            if(data->system_info.block_count > 0 && data->system_info.block_size > 0) {
+                simple_array_init(
+                    data->block_data,
+                    data->system_info.block_size * data->system_info.block_count);
                 simple_array_init(data->block_security, data->system_info.block_count);
 
-                const bool security_loaded = has_lock_bits ?
-                                                 iso15693_3_load_security(data, ff) :
-                                                 iso15693_3_load_security_legacy(data, ff);
-                if(!security_loaded) break;
+                if(!flipper_format_read_hex(
+                       ff,
+                       ISO15693_3_DATA_CONTENT_KEY,
+                       simple_array_get_data(data->block_data),
+                       simple_array_get_count(data->block_data)))
+                    break;
+
+                if(flipper_format_key_exist(ff, ISO15693_3_SECURITY_STATUS_KEY)) {
+                    const bool security_loaded = has_lock_bits ?
+                                                     iso15693_3_load_security(data, ff) :
+                                                     iso15693_3_load_security_legacy(data, ff);
+                    if(!security_loaded) break;
+                }
             }
         }
 
@@ -260,22 +262,24 @@ bool iso15693_3_save(const Iso15693_3Data* data, FlipperFormat* ff) {
                    ff, ISO15693_3_BLOCK_SIZE_KEY, &data->system_info.block_size, 1))
                 break;
 
-            if(!flipper_format_write_hex(
-                   ff,
-                   ISO15693_3_DATA_CONTENT_KEY,
-                   simple_array_cget_data(data->block_data),
-                   simple_array_get_count(data->block_data)))
-                break;
+            if(data->system_info.block_count > 0 && data->system_info.block_size > 0) {
+                if(!flipper_format_write_hex(
+                       ff,
+                       ISO15693_3_DATA_CONTENT_KEY,
+                       simple_array_cget_data(data->block_data),
+                       simple_array_get_count(data->block_data)))
+                    break;
 
-            if(!flipper_format_write_comment_cstr(
-                   ff, "Block Security Status: 01 = locked, 00 = not locked"))
-                break;
-            if(!flipper_format_write_hex(
-                   ff,
-                   ISO15693_3_SECURITY_STATUS_KEY,
-                   simple_array_cget_data(data->block_security),
-                   simple_array_get_count(data->block_security)))
-                break;
+                if(!flipper_format_write_comment_cstr(
+                       ff, "Block Security Status: 01 = locked, 00 = not locked"))
+                    break;
+                if(!flipper_format_write_hex(
+                       ff,
+                       ISO15693_3_SECURITY_STATUS_KEY,
+                       simple_array_cget_data(data->block_security),
+                       simple_array_get_count(data->block_security)))
+                    break;
+            }
         }
         saved = true;
     } while(false);
diff --git a/lib/nfc/protocols/iso15693_3/iso15693_3_poller_i.c b/lib/nfc/protocols/iso15693_3/iso15693_3_poller_i.c
index 6aee84a3f..bc677ce67 100644
--- a/lib/nfc/protocols/iso15693_3/iso15693_3_poller_i.c
+++ b/lib/nfc/protocols/iso15693_3/iso15693_3_poller_i.c
@@ -100,10 +100,12 @@ Iso15693_3Error iso15693_3_poller_activate(Iso15693_3Poller* instance, Iso15693_
             break;
         }
 
-        if(system_info->block_count > 0) {
-            // Read blocks: Optional command
+        if(system_info->block_count > 0 && system_info->block_size > 0) {
             simple_array_init(
                 data->block_data, system_info->block_count * system_info->block_size);
+            simple_array_init(data->block_security, system_info->block_count);
+
+            // Read blocks: Optional command
             ret = iso15693_3_poller_read_blocks(
                 instance,
                 simple_array_get_data(data->block_data),
@@ -115,8 +117,6 @@ Iso15693_3Error iso15693_3_poller_activate(Iso15693_3Poller* instance, Iso15693_
             }
 
             // Get block security status: Optional command
-            simple_array_init(data->block_security, system_info->block_count);
-
             ret = iso15693_3_poller_get_blocks_security(
                 instance, simple_array_get_data(data->block_security), system_info->block_count);
             if(ret != Iso15693_3ErrorNone) {