diff --git a/src/crypto_openssl.c b/src/crypto_openssl.c
index ca25674..dd26855 100644
--- a/src/crypto_openssl.c
+++ b/src/crypto_openssl.c
@@ -150,7 +150,6 @@ static int sqlcipher_openssl_deactivate(void *ctx) {
   openssl_init_count--;
 
   if(openssl_init_count == 0) {
-    sqlite3_mutex *temp_mutex;
     if(openssl_external_init == 0) {
     /* if OpenSSL hasn't be initialized externally, and the counter reaches zero 
        after it's decremented, release EVP memory