diff --git a/dos/Makefile b/dos/Makefile
index 9669110eea17413e19b08c1ddf44bffcdc8d8170_ZG9zL01ha2VmaWxl..1f040a4e5edfe591f4745f65976c07afc7edb623_ZG9zL01ha2VmaWxl 100644
--- a/dos/Makefile
+++ b/dos/Makefile
@@ -18,9 +18,7 @@
 CFLAGS = -g -Wall -Wextra -Wfatal-errors -march=i386 -mtune=i686 -O2
 LDFLAGS = -lemu
 
-# NOTE: -fgnu89-inline is needed on DJGPP 2.04 beta and GCC >= 4.3.0
-# because time.h uses GNU-style "extern inline".
-ALL_CFLAGS = -std=gnu99 -fgnu89-inline
+ALL_CFLAGS = -std=gnu99
 
 ALL_CPPFLAGS = \
 	-I. \