diff --git a/Sources/FuzzilliCli/Profiles/V8HoleFuzzingProfile.swift b/Sources/FuzzilliCli/Profiles/V8HoleFuzzingProfile.swift
index 29c41234a..e15adbff1 100644
--- a/Sources/FuzzilliCli/Profiles/V8HoleFuzzingProfile.swift
+++ b/Sources/FuzzilliCli/Profiles/V8HoleFuzzingProfile.swift
@@ -94,6 +94,9 @@ let v8HoleFuzzingProfile = Profile(
         ("fuzzilli('FUZZILLI_CRASH', 0)", .shouldCrash),
         ("fuzzilli('FUZZILLI_CRASH', 7)", .shouldCrash),
 
+        // Check that DEBUG is not defined.
+        ("fuzzilli('FUZZILLI_CRASH', 8)", .shouldNotCrash),
+
         // DCHECK and CHECK failures should be ignored.
         ("fuzzilli('FUZZILLI_CRASH', 1)", .shouldNotCrash),
         ("fuzzilli('FUZZILLI_CRASH', 2)", .shouldNotCrash),
diff --git a/Sources/FuzzilliCli/Profiles/V8Profile.swift b/Sources/FuzzilliCli/Profiles/V8Profile.swift
index 402d728c4..35e8c2680 100644
--- a/Sources/FuzzilliCli/Profiles/V8Profile.swift
+++ b/Sources/FuzzilliCli/Profiles/V8Profile.swift
@@ -584,6 +584,8 @@ let v8Profile = Profile(
         ("fuzzilli('FUZZILLI_CRASH', 2)", .shouldCrash),
         // Wild-write
         ("fuzzilli('FUZZILLI_CRASH', 3)", .shouldCrash),
+        // Check that DEBUG is defined.
+        ("fuzzilli('FUZZILLI_CRASH', 8)", .shouldCrash),
 
         // TODO we could try to check that OOM crashes are ignored here ( with.shouldNotCrash).
     ],