diff --git a/CMakeLists.txt b/CMakeLists.txt
index eb2dffc..d72a9bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,6 +28,10 @@ set( CMAKE_CXX_STANDARD 11 )
 set( CMAKE_CXX_STANDARD_REQUIRED ON )
 set( CMAKE_CXX_EXTENSIONS OFF )
 
+# OpenGL 3.0 deprecates some functions we use. 
+# Adding this flag makes the compiler not spam warnings.
+add_compile_options(-D OPENSSL_API_COMPAT=0x10100000L)
+
 # --------------------------------
 #  Library
 # --------------------------------