diff --git a/gen/meson.build b/gen/meson.build
index 2756633..a7da0a7 100644
--- a/gen/meson.build
+++ b/gen/meson.build
@@ -2,12 +2,13 @@
 sdbuspp_gen_meson_ver = run_command(
     sdbuspp_gen_meson_prog,
     '--version',
+    check: true,
 ).stdout().strip().split('\n')[0]
 
-if sdbuspp_gen_meson_ver != 'sdbus++-gen-meson version 4'
+if sdbuspp_gen_meson_ver != 'sdbus++-gen-meson version 5'
     warning('Generated meson files from wrong version of sdbus++-gen-meson.')
     warning(
-        'Expected "sdbus++-gen-meson version 4", got:',
+        'Expected "sdbus++-gen-meson version 5", got:',
         sdbuspp_gen_meson_ver
     )
 endif