diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6ee62d4ba..294f5b55d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -114,6 +114,7 @@ if(HAIKU)
     set(RTMIDI OFF)
 endif()
 
+set(CMAKE_C_STANDARD 11)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_FIND_PACKAGE_PREFER_CONFIG ON)