diff --git a/jni/GNUmakefile b/jni/GNUmakefile
index 7a027af..eaba319 100755
--- a/jni/GNUmakefile
+++ b/jni/GNUmakefile
@@ -188,9 +188,6 @@ endif
 
 ifeq ($(CPU), i386)
   MODEL = 32
-  ifeq ($(findstring $(OS), openbsd darwin mingw32 win32),)
-    CFLAGS += -march=i586 -mtune=generic
-  endif
 endif
 
 ifeq ($(CPU), amd64)