diff --git a/urbackupcommon/sha2/sha2.cpp b/urbackupcommon/sha2/sha2.cpp
index ddc9883d..9990f56e 100644
--- a/urbackupcommon/sha2/sha2.cpp
+++ b/urbackupcommon/sha2/sha2.cpp
@@ -954,7 +954,7 @@ int main()
 
 void sha256_init(sha256_ctx * ctx)
 {
-
+	ctx->sha.Restart();
 }
 
 void sha256_update(sha256_ctx *ctx, const unsigned char *message,
@@ -970,6 +970,7 @@ void sha256_final(sha256_ctx *ctx, unsigned char *digest)
 
 void sha512_init(sha512_ctx *ctx)
 {
+	ctx->sha.Restart();
 }
 
 void sha512_update(sha512_ctx *ctx, const unsigned char *message,