diff --git a/wolfcrypt/src/pkcs7.c b/wolfcrypt/src/pkcs7.c
index 0b0626f5d..6c6c8454a 100644
--- a/wolfcrypt/src/pkcs7.c
+++ b/wolfcrypt/src/pkcs7.c
@@ -12283,6 +12283,7 @@ int wc_PKCS7_DecodeCompressedData(PKCS7* pkcs7, byte* pkiMsg, word32 pkiMsgSz,
 {
     int length, version, ret;
     word32 idx = 0, algOID, contentType;
+    byte tag;
 
     byte* decompressed;
     word32 decompressedSz;