diff --git a/programs/pkey/dh_genprime.c b/programs/pkey/dh_genprime.c
index b09ef42..9037ce3 100644
--- a/programs/pkey/dh_genprime.c
+++ b/programs/pkey/dh_genprime.c
@@ -75,7 +75,7 @@
     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 ac6ed94..1a6463d 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -204,7 +204,7 @@
     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 4d60299..a757cb3 100644
--- a/programs/pkey/key_app.c
+++ b/programs/pkey/key_app.c
@@ -95,7 +95,7 @@
     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 ba926e3..0009d91 100644
--- a/programs/pkey/key_app_writer.c
+++ b/programs/pkey/key_app_writer.c
@@ -209,7 +209,7 @@
     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 d42a38e..ca74c00 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -767,7 +767,7 @@
     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 643d3c2..6f1dc1c 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -367,7 +367,7 @@
     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 dd78c0b..fb66b4c 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -1449,7 +1449,7 @@
     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 b66226d..d25b057 100644
--- a/programs/util/pem2der.c
+++ b/programs/util/pem2der.c
@@ -193,7 +193,7 @@
     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 a45802c..b14b084 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -165,7 +165,7 @@
     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 9b854a1..d7818d7 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -163,7 +163,7 @@
     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 ad3dacd..ea20144 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -241,7 +241,7 @@
     mbedtls_x509_crt_init(&issuer_crt);
     memset(buf, 0, 1024);
 
-    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 4b98757..b00f9f3 100644
--- a/programs/x509/crl_app.c
+++ b/programs/x509/crl_app.c
@@ -72,7 +72,7 @@
      */
     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 bc9f67f..dd7fac7 100644
--- a/programs/x509/req_app.c
+++ b/programs/x509/req_app.c
@@ -72,7 +72,7 @@
      */
     mbedtls_x509_csr_init(&csr);
 
-    if (argc == 0) {
+    if (argc < 2) {
 usage:
         mbedtls_printf(USAGE);
         goto exit;