diff --git a/src/internal.c b/src/internal.c
index 7deb4fd..f768556 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -5282,6 +5282,7 @@ static INLINE int CreateMac(WOLFSSH* ssh, const byte* in, word32 inSz,
                     ret = wc_HmacFinal(&hmac, digest);
                 if (ret == WS_SUCCESS)
                     WMEMCPY(mac, digest, SHA1_96_SZ);
+                wc_HmacFree(&hmac);
             }
             break;
 
@@ -5299,6 +5300,7 @@ static INLINE int CreateMac(WOLFSSH* ssh, const byte* in, word32 inSz,
                     ret = wc_HmacUpdate(&hmac, in, inSz);
                 if (ret == WS_SUCCESS)
                     ret = wc_HmacFinal(&hmac, mac);
+                wc_HmacFree(&hmac);
             }
             break;
 
@@ -5317,6 +5319,7 @@ static INLINE int CreateMac(WOLFSSH* ssh, const byte* in, word32 inSz,
                     ret = wc_HmacUpdate(&hmac, in, inSz);
                 if (ret == WS_SUCCESS)
                     ret = wc_HmacFinal(&hmac, mac);
+                wc_HmacFree(&hmac);
             }
             break;
 
@@ -5385,6 +5388,7 @@ static INLINE int VerifyMac(WOLFSSH* ssh, const byte* in, word32 inSz,
             default:
                 ret = WS_INVALID_ALGO_ID;
         }
+        wc_HmacFree(&hmac);
     }
 
     return ret;