diff --git a/bearssl/decls.nim b/bearssl/decls.nim
index 5fbdc06..57f91dd 100644
--- a/bearssl/decls.nim
+++ b/bearssl/decls.nim
@@ -371,7 +371,7 @@ when sizeof(int) == 8:
 {.compile: bearToolsPath & "certs.c".}
 {.compile: bearToolsPath & "files.c".}
 
-{.pragma: bearSslFunc, cdecl, gcsafe, noSideEffect.}
+{.pragma: bearSslFunc, cdecl, gcsafe, noSideEffect, raises: [].}
 
 type
   HashClass* {.importc: "br_hash_class", header: "bearssl_hash.h", bycopy.} = object