diff --git a/programs/pkey/dh_genprime.c b/programs/pkey/dh_genprime.c
index 25371ba..1f4cd59 100644
--- a/programs/pkey/dh_genprime.c
+++ b/programs/pkey/dh_genprime.c
@@ -71,7 +71,7 @@
     mbedtls_ctr_drbg_init(&ctr_drbg);
     mbedtls_entropy_init(&entropy);
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;
diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
index 85ee435..029558d 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -200,7 +200,7 @@
     mbedtls_ctr_drbg_init(&ctr_drbg);
     memset(buf, 0, sizeof(buf));
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
 #if defined(MBEDTLS_ECP_C)
diff --git a/programs/pkey/key_app.c b/programs/pkey/key_app.c
index 8ed88da..c80dcd0 100644
--- a/programs/pkey/key_app.c
+++ b/programs/pkey/key_app.c
@@ -103,7 +103,7 @@
     mbedtls_mpi_init(&D); mbedtls_mpi_init(&E); mbedtls_mpi_init(&DP);
     mbedtls_mpi_init(&DQ); mbedtls_mpi_init(&QP);
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto cleanup;
diff --git a/programs/pkey/key_app_writer.c b/programs/pkey/key_app_writer.c
index 2dbb79e..862c93f 100644
--- a/programs/pkey/key_app_writer.c
+++ b/programs/pkey/key_app_writer.c
@@ -220,7 +220,7 @@
     mbedtls_mpi_init(&D); mbedtls_mpi_init(&E); mbedtls_mpi_init(&DP);
     mbedtls_mpi_init(&DQ); mbedtls_mpi_init(&QP);
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index b124065..03034d1 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -867,7 +867,7 @@
     mbedtls_test_enable_insecure_external_rng();
 #endif  /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         if (ret == 0) {
             ret = 1;
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index 4e54be8..3b040aa 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -370,7 +370,7 @@
     mbedtls_pk_init(&pkey);
     mbedtls_ctr_drbg_init(&ctr_drbg);
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
 
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index b3d9f5a..d4f9664 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -1633,7 +1633,7 @@
     signal(SIGINT, term_handler);
 #endif
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         if (ret == 0) {
             ret = 1;
diff --git a/programs/util/pem2der.c b/programs/util/pem2der.c
index 4a25f21..5dd367a 100644
--- a/programs/util/pem2der.c
+++ b/programs/util/pem2der.c
@@ -189,7 +189,7 @@
     memset(buf, 0, sizeof(buf));
     memset(der_buffer, 0, sizeof(der_buffer));
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;
diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index 6135238..a9656c6 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -161,7 +161,7 @@
     memset(&cacrl, 0, sizeof(mbedtls_x509_crl));
 #endif
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;
diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index 1126e60..8ef5932 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -159,7 +159,7 @@
     mbedtls_ctr_drbg_init(&ctr_drbg);
     memset(buf, 0, sizeof(buf));
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index 3e134dd..8a652fe 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -273,7 +273,7 @@
     mbedtls_x509_crt_init(&issuer_crt);
     memset(buf, 0, sizeof(buf));
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;
diff --git a/programs/x509/crl_app.c b/programs/x509/crl_app.c
index f06987c..d74a488 100644
--- a/programs/x509/crl_app.c
+++ b/programs/x509/crl_app.c
@@ -70,7 +70,7 @@
      */
     mbedtls_x509_crl_init(&crl);
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;
diff --git a/programs/x509/req_app.c b/programs/x509/req_app.c
index 8cfe4a4..83e2546 100644
--- a/programs/x509/req_app.c
+++ b/programs/x509/req_app.c
@@ -70,7 +70,7 @@
      */
     mbedtls_x509_csr_init(&csr);
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;