diff --git a/programs/test/ssl_test.c b/programs/test/ssl_test.c
index debdb07..2162132 100644
--- a/programs/test/ssl_test.c
+++ b/programs/test/ssl_test.c
@@ -434,7 +434,7 @@
 
 int main( int argc, char *argv[] )
 {
-    int i, j, n;
+    int i;
     const int *list;
     int ret = 1;
     int nb_conn;
@@ -474,14 +474,6 @@
 
     for( i = 1; i < argc; i++ )
     {
-        n = strlen( argv[i] );
-
-        for( j = 0; j < n; j++ )
-        {
-            if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
-                argv[i][j] |= 0x20;
-        }
-
         p = argv[i];
         if( ( q = strchr( p, '=' ) ) == NULL )
             continue;
diff --git a/programs/util/pem2der.c b/programs/util/pem2der.c
index f372684..f1da438 100644
--- a/programs/util/pem2der.c
+++ b/programs/util/pem2der.c
@@ -174,7 +174,7 @@
     unsigned char der_buffer[4096];
     char buf[1024];
     size_t pem_size, der_size = sizeof(der_buffer);
-    int i, j, n;
+    int i;
     char *p, *q;
 
     /*
@@ -201,13 +201,6 @@
             goto usage;
         *q++ = '\0';
 
-        n = strlen( p );
-        for( j = 0; j < n; j++ )
-        {
-            if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
-                argv[i][j] |= 0x20;
-        }
-
         if( strcmp( p, "filename" ) == 0 )
             opt.filename = q;
         else if( strcmp( p, "output_file" ) == 0 )
diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index 2388dc9..c738b4a 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -128,7 +128,7 @@
     int ret = 0;
     pk_context key;
     char buf[1024];
-    int i, j, n;
+    int i;
     char *p, *q, *r;
     x509write_csr req;
     entropy_context entropy;
@@ -166,13 +166,6 @@
             goto usage;
         *q++ = '\0';
 
-        n = strlen( p );
-        for( j = 0; j < n; j++ )
-        {
-            if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
-                argv[i][j] |= 0x20;
-        }
-
         if( strcmp( p, "filename" ) == 0 )
             opt.filename = q;
         else if( strcmp( p, "output_file" ) == 0 )
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index beac089..a2f2656 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -183,7 +183,7 @@
                 *subject_key = &loaded_subject_key;
     char buf[1024];
     char issuer_name[128];
-    int i, j, n;
+    int i;
     char *p, *q, *r;
 #if defined(POLARSSL_X509_CSR_PARSE_C)
     char subject_name[128];
@@ -244,13 +244,6 @@
             goto usage;
         *q++ = '\0';
 
-        n = strlen( p );
-        for( j = 0; j < n; j++ )
-        {
-            if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
-                argv[i][j] |= 0x20;
-        }
-
         if( strcmp( p, "request_file" ) == 0 )
             opt.request_file = q;
         else if( strcmp( p, "subject_key" ) == 0 )
diff --git a/programs/x509/crl_app.c b/programs/x509/crl_app.c
index 4bc3703..0e4cd88 100644
--- a/programs/x509/crl_app.c
+++ b/programs/x509/crl_app.c
@@ -66,7 +66,7 @@
     int ret = 0;
     unsigned char buf[100000];
     x509_crl crl;
-    int i, j, n;
+    int i;
     char *p, *q;
 
     /*
@@ -85,14 +85,6 @@
 
     for( i = 1; i < argc; i++ )
     {
-        n = strlen( argv[i] );
-
-        for( j = 0; j < n; j++ )
-        {
-            if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
-                argv[i][j] |= 0x20;
-        }
-
         p = argv[i];
         if( ( q = strchr( p, '=' ) ) == NULL )
             goto usage;
diff --git a/programs/x509/req_app.c b/programs/x509/req_app.c
index 9f478f2..1f9d628 100644
--- a/programs/x509/req_app.c
+++ b/programs/x509/req_app.c
@@ -66,7 +66,7 @@
     int ret = 0;
     unsigned char buf[100000];
     x509_csr csr;
-    int i, j, n;
+    int i;
     char *p, *q;
 
     /*
@@ -85,14 +85,6 @@
 
     for( i = 1; i < argc; i++ )
     {
-        n = strlen( argv[i] );
-
-        for( j = 0; j < n; j++ )
-        {
-            if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
-                argv[i][j] |= 0x20;
-        }
-
         p = argv[i];
         if( ( q = strchr( p, '=' ) ) == NULL )
             goto usage;