diff --git a/sha1dc/sha1.c b/sha1dc/sha1.c
index d25d93abd8..8ff2321dfb 100644
--- a/sha1dc/sha1.c
+++ b/sha1dc/sha1.c
@@ -1661,7 +1661,7 @@ void SHA1DCInit(SHA1_CTX* ctx)
 	ctx->ihv[3] = 0x10325476;
 	ctx->ihv[4] = 0xC3D2E1F0;
 	ctx->found_collision = 0;
-	ctx->safe_hash = 1;
+	ctx->safe_hash = 0;
 	ctx->ubc_check = 1;
 	ctx->detect_coll = 1;
 	ctx->reduced_round_coll = 0;