diff --git a/src/ntlm.c b/src/ntlm.c
index 60a0787..cdd1725 100644
--- a/src/ntlm.c
+++ b/src/ntlm.c
@@ -78,12 +78,12 @@ int ntlm_init_ctx(struct ntlm_ctx **ctx)
     _ctx = calloc(1, sizeof(struct ntlm_ctx));
     if (!_ctx) return ENOMEM;
 
-    _ctx->from_oem = iconv_open("UTF16LE", "UTF-8");
+    _ctx->from_oem = iconv_open("UTF-16LE", "UTF-8");
     if (_ctx->from_oem == (iconv_t) -1) {
         ret = errno;
     }
 
-    _ctx->to_oem = iconv_open("UTF-8", "UTF16LE");
+    _ctx->to_oem = iconv_open("UTF-8", "UTF-16LE");
     if (_ctx->to_oem == (iconv_t) -1) {
         iconv_close(_ctx->from_oem);
         ret = errno;
diff --git a/src/ntlm_crypto.c b/src/ntlm_crypto.c
index d71e45b..8d315ed 100644
--- a/src/ntlm_crypto.c
+++ b/src/ntlm_crypto.c
@@ -50,7 +50,7 @@ int NTOWFv1(const char *password, struct ntlm_key *result)
     int ret;
 
     len = strlen(password);
-    retstr = u8_conv_to_encoding("UTF16LE", iconveh_error,
+    retstr = u8_conv_to_encoding("UTF-16LE", iconveh_error,
                                  (const uint8_t *)password, len,
                                  NULL, NULL, &out);
     if (!retstr) return ERR_CRYPTO;
@@ -254,7 +254,7 @@ int NTOWFv2(struct ntlm_ctx *ctx, struct ntlm_key *nt_hash,
         offs += len;
     }
 
-    retstr = (uint8_t *)u8_conv_to_encoding("UTF16LE", iconveh_error,
+    retstr = (uint8_t *)u8_conv_to_encoding("UTF-16LE", iconveh_error,
                                             upcased, offs, NULL, NULL, &out);
     if (!retstr) return ERR_CRYPTO;