diff --git a/client/cmdhfmfp.c b/client/cmdhfmfp.c
index 3081f77f4..2c0fc56eb 100644
--- a/client/cmdhfmfp.c
+++ b/client/cmdhfmfp.c
@@ -737,9 +737,9 @@ void Fill2bPattern(uint8_t keyList[MAX_KEYS_LIST_LEN][AES_KEY_LEN], size_t *keyL
 
 static int CmdHFMFPChk(const char *cmd) {
     int res;
-    uint8_t keyList[MAX_KEYS_LIST_LEN][AES_KEY_LEN] = {0};
+    uint8_t keyList[MAX_KEYS_LIST_LEN][AES_KEY_LEN] = {{0}};
     size_t keyListLen = 0;
-    uint8_t foundKeys[2][64][AES_KEY_LEN + 1] = {0};
+    uint8_t foundKeys[2][64][AES_KEY_LEN + 1] = {{{0}}};
     
     CLIParserInit("hf mfp chk",
                   "Checks keys with Mifare Plus card.",