diff --git a/networking/udhcp/common.h b/networking/udhcp/common.h
index 6907e7f60..a9c23a186 100644
--- a/networking/udhcp/common.h
+++ b/networking/udhcp/common.h
@@ -295,7 +295,9 @@ int FAST_FUNC udhcp_str2optset(const char *str,
 		const struct dhcp_optflag *optflags,
 		const char *option_strings);
 
+#if ENABLE_UDHCPC || ENABLE_UDHCPD
 void udhcp_init_header(struct dhcp_packet *packet, char type) FAST_FUNC;
+#endif
 
 int udhcp_recv_kernel_packet(struct dhcp_packet *packet, int fd) FAST_FUNC;
 
diff --git a/networking/udhcp/packet.c b/networking/udhcp/packet.c
index 0a31f2643..9e1b46d2f 100644
--- a/networking/udhcp/packet.c
+++ b/networking/udhcp/packet.c
@@ -12,6 +12,7 @@
 #include <netinet/if_ether.h>
 #include <netpacket/packet.h>
 
+#if ENABLE_UDHCPC || ENABLE_UDHCPD
 void FAST_FUNC udhcp_init_header(struct dhcp_packet *packet, char type)
 {
 	memset(packet, 0, sizeof(*packet));
@@ -29,6 +30,7 @@ void FAST_FUNC udhcp_init_header(struct dhcp_packet *packet, char type)
 		packet->options[0] = DHCP_END;
 	udhcp_add_simple_option(packet, DHCP_MESSAGE_TYPE, type);
 }
+#endif
 
 #if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 2
 void FAST_FUNC udhcp_dump_packet(struct dhcp_packet *packet)
diff --git a/shell/hush.c b/shell/hush.c
index 125463a56..f5c1e5bc1 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -331,9 +331,9 @@
 /* Separate defines document which part of code implements what */
 #define BASH_PATTERN_SUBST ENABLE_HUSH_BASH_COMPAT
 #define BASH_SUBSTR        ENABLE_HUSH_BASH_COMPAT
-#define BASH_TEST2         ENABLE_HUSH_BASH_COMPAT
 #define BASH_SOURCE        ENABLE_HUSH_BASH_COMPAT
 #define BASH_HOSTNAME_VAR  ENABLE_HUSH_BASH_COMPAT
+#define BASH_TEST2         (ENABLE_HUSH_BASH_COMPAT && ENABLE_HUSH_TEST)
 
 
 /* Build knobs */
@@ -1457,7 +1457,7 @@ static void restore_redirected_FILEs(void)
 		fl = fl->next;
 	}
 }
-#if ENABLE_FEATURE_SH_STANDALONE
+#if ENABLE_FEATURE_SH_STANDALONE && BB_MMU
 static void close_all_FILE_list(void)
 {
 	struct FILE_list *fl = G.FILE_list;
@@ -8575,8 +8575,9 @@ int hush_main(int argc, char **argv)
 			optarg++;
 			empty_trap_mask = bb_strtoull(optarg, &optarg, 16);
 			if (empty_trap_mask != 0) {
-				int sig;
+				IF_HUSH_TRAP(int sig;)
 				install_special_sighandlers();
+# if ENABLE_HUSH_TRAP
 				G_traps = xzalloc(sizeof(G_traps[0]) * NSIG);
 				for (sig = 1; sig < NSIG; sig++) {
 					if (empty_trap_mask & (1LL << sig)) {
@@ -8584,6 +8585,7 @@ int hush_main(int argc, char **argv)
 						install_sighandler(sig, SIG_IGN);
 					}
 				}
+# endif
 			}
 # if ENABLE_HUSH_LOOPS
 			optarg++;