diff --git a/Makefile b/Makefile
index e7a9db0..dd5274f 100644
--- a/Makefile
+++ b/Makefile
@@ -282,7 +282,7 @@
            USE_LINUX_SPLICE USE_LIBCRYPT USE_CRYPT_H USE_VSYSCALL             \
            USE_GETADDRINFO USE_OPENSSL USE_LUA USE_FUTEX USE_ACCEPT4          \
            USE_MY_ACCEPT4 USE_ZLIB USE_SLZ USE_CPU_AFFINITY USE_TFO USE_NS    \
-           USE_DL USE_RT USE_DEVICEATLAS USE_51DEGREES USE_SYSTEMD            \
+           USE_DL USE_RT USE_DEVICEATLAS USE_51DEGREES USE_WURFL USE_SYSTEMD  \
            USE_OBSOLETE_LINKER USE_PRCTL
 
 #### Target system options
@@ -632,14 +632,13 @@
 WURFL_INC = $(WURFL_SRC)
 WURFL_LIB = $(WURFL_SRC)
 OPTIONS_OBJS    += src/wurfl.o
-OPTIONS_CFLAGS  += -DUSE_WURFL $(if $(WURFL_INC),-I$(WURFL_INC))
+OPTIONS_CFLAGS  += $(if $(WURFL_INC),-I$(WURFL_INC))
 ifneq ($(WURFL_DEBUG),)
 OPTIONS_CFLAGS  += -DWURFL_DEBUG
 endif
 ifneq ($(WURFL_HEADER_WITH_DETAILS),)
 OPTIONS_CFLAGS  += -DWURFL_HEADER_WITH_DETAILS
 endif
-BUILD_OPTIONS   += $(call ignore_implicit,USE_WURFL)
 OPTIONS_LDFLAGS += $(if $(WURFL_LIB),-L$(WURFL_LIB)) -lwurfl
 endif