diff --git a/pkgs/by-name/op/opendbx/package.nix b/pkgs/by-name/op/opendbx/package.nix
index 0e6db1ef2ec4..4b46e91ae277 100644
--- a/pkgs/by-name/op/opendbx/package.nix
+++ b/pkgs/by-name/op/opendbx/package.nix
@@ -27,6 +27,13 @@ stdenv.mkDerivation rec {
     configureFlagsArray=(--with-backends="mysql pgsql sqlite3")
   '';
 
+  configureFlags = [
+    # detection fails when cross-compiling
+    "ac_cv_func_malloc_0_nonnull=yes"
+    "ac_cv_func_realloc_0_nonnull=yes"
+    "ac_cv_func_strtod=yes"
+  ];
+
   buildInputs = [
     readline
     libmysqlclient