diff --git a/softfloat/CMakeLists.txt b/softfloat/CMakeLists.txt
index fa2cc62..b5766c6 100644
--- a/softfloat/CMakeLists.txt
+++ b/softfloat/CMakeLists.txt
@@ -335,7 +335,6 @@ target_compile_definitions(softfloat PRIVATE
 	SOFTFLOAT_FAST_DIV32TO16
   	SOFTFLOAT_FAST_DIV64TO32
   	SOFTFLOAT_FAST_INT64
-	__GNUC_STDC_INLINE__=1
 #  	THREAD_LOCAL=__thread
 )
 target_include_directories(softfloat PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/build/Linux-x86_64-GCC)