diff --git a/cmdline.c b/cmdline.c
index bd3a2fa..845910a 100644
--- a/cmdline.c
+++ b/cmdline.c
@@ -282,6 +282,7 @@ bool cmdlineParse(int argc, char *argv[], struct nsjconf_t * nsjconf)
 	};
 	/*  *INDENT-OFF* */
 
+	TAILQ_INIT(&nsjconf->envs);
 	TAILQ_INIT(&nsjconf->pids);
 	TAILQ_INIT(&nsjconf->mountpts);
 
@@ -312,6 +313,7 @@ bool cmdlineParse(int argc, char *argv[], struct nsjconf_t * nsjconf)
 		{{"daemon", no_argument, NULL, 'd'}, "Daemonize after start? (default: false)"},
 		{{"verbose", no_argument, NULL, 'v'}, "Verbose output (default: false)"},
 		{{"keep_env", no_argument, NULL, 'e'}, "Should all environment variables be passed to the child? (default: false)"},
+		{{"env", required_argument, NULL, 'E'}, "Environment variable (can be used multiple times)"},
 		{{"keep_caps", no_argument, NULL, 0x0501}, "Don't drop capabilities (DANGEROUS) (default: false)"},
 		{{"silent", no_argument, NULL, 0x0502}, "Redirect child's fd:0/1/2 to /dev/null (default: false)"},
 		{{"disable_sandbox", no_argument, NULL, 0x0503}, "Don't enable the seccomp-bpf sandboxing (default: false)"},
@@ -351,8 +353,8 @@ bool cmdlineParse(int argc, char *argv[], struct nsjconf_t * nsjconf)
 
 	int opt_index = 0;
 	for (;;) {
-		int c =
-		    getopt_long(argc, argv, "H:D:c:p:i:u:g:l:t:M:Ndveh?R:B:T:I:", opts, &opt_index);
+		int c = getopt_long(argc, argv, "H:D:c:p:i:u:g:l:t:M:Ndveh?E:R:B:T:I:", opts,
+				    &opt_index);
 		if (c == -1) {
 			break;
 		}
@@ -477,6 +479,13 @@ bool cmdlineParse(int argc, char *argv[], struct nsjconf_t * nsjconf)
 		case 0x0603:
 			nsjconf->mount_proc = false;
 			break;
+		case 'E':
+			{
+				struct charptr_t *p = util_malloc(sizeof(struct charptr_t));
+				p->val = optarg;
+				TAILQ_INSERT_TAIL(&nsjconf->envs, p, pointers);
+			}
+			break;
 		case 'R':
 			{
 				struct mounts_t *p = util_malloc(sizeof(struct mounts_t));
diff --git a/common.h b/common.h
index 4820d06..1b42702 100644
--- a/common.h
+++ b/common.h
@@ -55,6 +55,11 @@ enum mode_t {
 	MODE_STANDALONE_RERUN
 };
 
+struct charptr_t {
+	char *val;
+	 TAILQ_ENTRY(charptr_t) pointers;
+};
+
 struct nsjconf_t {
 	const char *hostname;
 	const char *cwd;
@@ -93,6 +98,7 @@ struct nsjconf_t {
 	unsigned int max_conns_per_ip;
 	size_t tmpfs_size;
 	bool mount_proc;
+	 TAILQ_HEAD(envlist, charptr_t) envs;
 	 TAILQ_HEAD(pidslist, pids_t) pids;
 	 TAILQ_HEAD(mountptslist, mounts_t) mountpts;
 };
diff --git a/subproc.c b/subproc.c
index 74e56ce..0b73e2f 100644
--- a/subproc.c
+++ b/subproc.c
@@ -76,16 +76,19 @@ static int subprocNewProc(struct nsjconf_t *nsjconf, int fd_in, int fd_out, int
 		exit(1);
 	}
 
-	char *const *env = { NULL };
-	if (nsjconf->keep_env == true) {
-		env = environ;
+	if (nsjconf->keep_env == false) {
+		clearenv();
+	}
+	struct charptr_t *p;
+	TAILQ_FOREACH(p, &nsjconf->envs, pointers) {
+		putenv(p->val);
 	}
 
 	LOG_D("Trying to execve('%s')", nsjconf->argv[0]);
 	for (int i = 0; nsjconf->argv[i]; i++) {
 		LOG_D(" Arg[%d]: '%s'", i, nsjconf->argv[i]);
 	}
-	execve(nsjconf->argv[0], &nsjconf->argv[0], env);
+	execv(nsjconf->argv[0], &nsjconf->argv[0]);
 
 	PLOG_E("execve('%s') failed", nsjconf->argv[0]);