diff --git a/src/Makefile.am b/src/Makefile.am
index 35b9b0120..edc0ba40c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -277,7 +277,7 @@ libbitcoin_util_a-clientversion.$(OBJEXT): obj/build.h
 
 # server: zcashd
 libbitcoin_server_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) $(EVENT_CFLAGS) $(EVENT_PTHREADS_CFLAGS) -DSERVER
-libbitcoin_server_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS) -DSEVER
+libbitcoin_server_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS) -DSERVER
 libbitcoin_server_a_SOURCES = \
   sendalert.cpp \
   addrman.cpp \