diff --git a/src/libsodium/randombytes/internal/randombytes_internal_random.c b/src/libsodium/randombytes/internal/randombytes_internal_random.c
index 1f561fa5..4336cf10 100644
--- a/src/libsodium/randombytes/internal/randombytes_internal_random.c
+++ b/src/libsodium/randombytes/internal/randombytes_internal_random.c
@@ -74,7 +74,7 @@ BOOLEAN NTAPI RtlGenRandom(PVOID RandomBuffer, ULONG RandomBufferLength);
 
 #define INTERNAL_RANDOM_BLOCK_SIZE crypto_core_hchacha20_OUTPUTBYTES
 
-#if defined(__OpenBSD__) || defined(__CloudABI__)
+#if defined(__OpenBSD__) || defined(__CloudABI__) || defined(__wasi__)
 # define HAVE_SAFE_ARC4RANDOM 1
 #endif
 #if defined(__CloudABI__) || defined(__wasm__)
diff --git a/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c b/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c
index 82bec7a0..d080b383 100644
--- a/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c
+++ b/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c
@@ -72,7 +72,7 @@ BOOLEAN NTAPI RtlGenRandom(PVOID RandomBuffer, ULONG RandomBufferLength);
 # pragma comment(lib, "advapi32.lib")
 #endif
 
-#if defined(__OpenBSD__) || defined(__CloudABI__)
+#if defined(__OpenBSD__) || defined(__CloudABI__) || defined(__wasi__)
 # define HAVE_SAFE_ARC4RANDOM 1
 #endif
 
@@ -375,7 +375,7 @@ randombytes_sysrandom(void)
     return r;
 }
 
-#endif /* __OpenBSD__ */
+#endif /* HAVE_SAFE_ARC4RANDOM */
 
 static const char *
 randombytes_sysrandom_implementation_name(void)