diff --git a/build/build/src/enso.rs b/build/build/src/enso.rs
index b1258c19c1db..40f03754c938 100644
--- a/build/build/src/enso.rs
+++ b/build/build/src/enso.rs
@@ -1,6 +1,6 @@
 use crate::prelude::*;
 
-use crate::paths::Paths;
+use crate::paths::{ENSO_ENABLE_ASSERTIONS, Paths};
 use crate::paths::ENSO_META_TEST_ARGS;
 use crate::paths::ENSO_META_TEST_COMMAND;
 use crate::postgres;
@@ -119,6 +119,8 @@ impl BuiltEnso {
         ENSO_META_TEST_COMMAND.set(&self.wrapper_script_path())?;
         ENSO_META_TEST_ARGS.set(&format!("{} --run", ir_caches.flag()))?;
 
+        ENSO_ENABLE_ASSERTIONS.set(&"true".to_string())?;
+
         // Prepare Engine Test Environment
         if let Ok(gdoc_key) = std::env::var("GDOC_KEY") {
             let google_api_test_data_dir =
diff --git a/build/build/src/paths.rs b/build/build/src/paths.rs
index afd5bab79df6..c52809a091b1 100644
--- a/build/build/src/paths.rs
+++ b/build/build/src/paths.rs
@@ -29,6 +29,9 @@ ide_ci::define_env_var! {
     /// Arguments to the engine runner.
     /// See: <https://github.com/diab0l/enso/blob/feature/test_with_clue/test/Meta_Test_Suite_Tests/README.md>
     ENSO_META_TEST_ARGS, String;
+
+    /// If Enso-specific assertions should be enabled.
+    ENSO_ENABLE_ASSERTIONS, String;
 }
 
 pub const EDITION_FILE_ARTIFACT_NAME: &str = "Edition File";