diff --git a/src/test/test_bitcoin.h b/src/test/test_bitcoin.h
index 0087eeb2d..c9e4a3427 100644
--- a/src/test/test_bitcoin.h
+++ b/src/test/test_bitcoin.h
@@ -33,7 +33,6 @@ static inline uint256 InsecureRand256() { return insecure_rand_ctx.rand256(); }
 static inline uint64_t InsecureRandBits(int bits) { return insecure_rand_ctx.randbits(bits); }
 static inline uint64_t InsecureRandRange(uint64_t range) { return insecure_rand_ctx.randrange(range); }
 static inline bool InsecureRandBool() { return insecure_rand_ctx.randbool(); }
-static inline std::vector<unsigned char> InsecureRandBytes(size_t len) { return insecure_rand_ctx.randbytes(len); }
 
 /** Basic testing setup.
  * This just configures logging and chain parameters.