diff --git a/btime/Makefile b/btime/Makefile
index e936aea..ad3955c 100644
--- a/btime/Makefile
+++ b/btime/Makefile
@@ -1,7 +1,7 @@
 all: compile link
 
 compile:
-	g++ -fPIC -O3 -c btime.cpp
+	g++ -fPIC -O3 -c btime.cpp -m32
 
 link:
 	g++ btime.o -O3 -m32 -lstdc++ -lrt -shared -Wl,-soname,btime.so -o btime.so