diff --git a/docs/libcurl/opts/CURLOPT_FTPSSLAUTH.md b/docs/libcurl/opts/CURLOPT_FTPSSLAUTH.md
index c094c9a762..5252da7db5 100644
--- a/docs/libcurl/opts/CURLOPT_FTPSSLAUTH.md
+++ b/docs/libcurl/opts/CURLOPT_FTPSSLAUTH.md
@@ -61,7 +61,7 @@ int main(void)
     curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/file.txt");
     curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_TRY);
     /* funny server, ask for SSL before TLS */
-    curl_easy_setopt(curl, CURLOPT_FTPSSLAUTH, CURLFTPAUTH_SSL);
+    curl_easy_setopt(curl, CURLOPT_FTPSSLAUTH, (long)CURLFTPAUTH_SSL);
     res = curl_easy_perform(curl);
     curl_easy_cleanup(curl);
   }
diff --git a/docs/libcurl/opts/CURLOPT_FTP_CREATE_MISSING_DIRS.md b/docs/libcurl/opts/CURLOPT_FTP_CREATE_MISSING_DIRS.md
index 6ae4340ac1..ea7d49d776 100644
--- a/docs/libcurl/opts/CURLOPT_FTP_CREATE_MISSING_DIRS.md
+++ b/docs/libcurl/opts/CURLOPT_FTP_CREATE_MISSING_DIRS.md
@@ -67,7 +67,7 @@ int main(void)
     curl_easy_setopt(curl, CURLOPT_URL,
                      "ftp://example.com/non-existing/new.txt");
     curl_easy_setopt(curl, CURLOPT_FTP_CREATE_MISSING_DIRS,
-                     CURLFTP_CREATE_DIR_RETRY);
+                     (long)CURLFTP_CREATE_DIR_RETRY);
 
     res = curl_easy_perform(curl);
 
diff --git a/docs/libcurl/opts/CURLOPT_FTP_FILEMETHOD.md b/docs/libcurl/opts/CURLOPT_FTP_FILEMETHOD.md
index 7b8999130c..320b362f8f 100644
--- a/docs/libcurl/opts/CURLOPT_FTP_FILEMETHOD.md
+++ b/docs/libcurl/opts/CURLOPT_FTP_FILEMETHOD.md
@@ -68,7 +68,8 @@ int main(void)
   if(curl) {
     CURLcode res;
     curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/1/2/3/4/new.txt");
-    curl_easy_setopt(curl, CURLOPT_FTP_FILEMETHOD, CURLFTPMETHOD_SINGLECWD);
+    curl_easy_setopt(curl, CURLOPT_FTP_FILEMETHOD,
+                     (long)CURLFTPMETHOD_SINGLECWD);
 
     res = curl_easy_perform(curl);
 
diff --git a/docs/libcurl/opts/CURLOPT_FTP_SSL_CCC.md b/docs/libcurl/opts/CURLOPT_FTP_SSL_CCC.md
index db62918335..12058b6826 100644
--- a/docs/libcurl/opts/CURLOPT_FTP_SSL_CCC.md
+++ b/docs/libcurl/opts/CURLOPT_FTP_SSL_CCC.md
@@ -63,7 +63,7 @@ int main(void)
     curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/file.txt");
     curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_CONTROL);
     /* go back to clear-text FTP after authenticating */
-    curl_easy_setopt(curl, CURLOPT_FTP_SSL_CCC, CURLFTPSSL_CCC_ACTIVE);
+    curl_easy_setopt(curl, CURLOPT_FTP_SSL_CCC, (long)CURLFTPSSL_CCC_ACTIVE);
     res = curl_easy_perform(curl);
     curl_easy_cleanup(curl);
   }