diff --git a/Makefile b/Makefile
index b03ab7c25..0b60de2cd 100644
--- a/Makefile
+++ b/Makefile
@@ -738,7 +738,6 @@ endif
 
 ifeq ($(CONFIG_LINUX_I2C_HELPER), yes)
 LIB_OBJS += i2c_helper_linux.o
-FEATURE_CFLAGS += -D'CONFIG_I2C_SUPPORT=1'
 endif
 
 ifneq ($(NEED_SERIAL), )
diff --git a/meson.build b/meson.build
index 86657cefa..85f40ba56 100644
--- a/meson.build
+++ b/meson.build
@@ -342,7 +342,6 @@ endif
 
 if host_machine.system() == 'linux'
   srcs += 'i2c_helper_linux.c'
-  cargs += '-DCONFIG_I2C_SUPPORT=1'
 endif
 
 # raw memory, MSR or PCI port I/O access