diff --git a/Userland/Libraries/LibCrypto/CMakeLists.txt b/Userland/Libraries/LibCrypto/CMakeLists.txt
index 762c720379..f7654894dc 100644
--- a/Userland/Libraries/LibCrypto/CMakeLists.txt
+++ b/Userland/Libraries/LibCrypto/CMakeLists.txt
@@ -1,3 +1,5 @@
+add_compile_options(-Wvla)
+
 set(SOURCES
     ASN1/ASN1.cpp
     ASN1/DER.cpp