diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9cb6f2aa..9ce4b025 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -53,7 +53,7 @@ if(MSVC)
     add_compile_options(/fsanitize=address) # Note that this shouldn't be passed to the linker.
   endif()
 else()
-  add_compile_options(-Wall -pedantic -fno-exceptions -fno-rtti -Wno-unknown-warning-option
+  add_compile_options(-Wall -pedantic -fno-exceptions $<$<COMPILE_LANGUAGE:CXX>:-fno-rtti> -Wno-unknown-warning-option
     # C++20 allows macros to take zero variadic arguments.
     # Some versions of Clang don't recognize this, and treat them as a GNU extension.
     -Wno-gnu-zero-variadic-macro-arguments)