diff --git a/CMakeLists.txt b/CMakeLists.txt
index bc8ffb27f..440564dd0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -287,6 +287,8 @@ endif()
 
 # Opus is mandatory
 set(OPUS_X86_MAY_HAVE_AVX2 OFF CACHE BOOL "Enable AVX2 for Opus" FORCE)
+set(OPUS_FORTIFY_SOURCE OFF CACHE BOOL "Enable Fortify Source" FORCE)
+set(OPUS_STACK_PROTECTOR OFF CACHE BOOL "Enable Fortify Source" FORCE)
 add_subdirectory(extern/opus EXCLUDE_FROM_ALL)
 
 if (USE_SNDFILE)