diff --git a/Userland/Services/WebServer/Client.cpp b/Userland/Services/WebServer/Client.cpp
index 0c66e91369..1ed012ede8 100644
--- a/Userland/Services/WebServer/Client.cpp
+++ b/Userland/Services/WebServer/Client.cpp
@@ -240,7 +240,7 @@ void Client::handle_directory_listing(const String& requested_path, const String
         builder.append(escape_html_entities(name));
         builder.append("</a></td><td>&nbsp;</td>");
 
-        builder.appendf("<td>%10zd</td><td>&nbsp;</td>", st.st_size);
+        builder.appendf("<td>%10lld</td><td>&nbsp;</td>", st.st_size);
         builder.append("<td>");
         builder.append(Core::DateTime::from_timestamp(st.st_mtime).to_string());
         builder.append("</td>");
diff --git a/Userland/Utilities/ls.cpp b/Userland/Utilities/ls.cpp
index 3e3f74c75d..2510d58982 100644
--- a/Userland/Utilities/ls.cpp
+++ b/Userland/Utilities/ls.cpp
@@ -312,7 +312,7 @@ static bool print_filesystem_object(const String& path, const String& name, cons
         if (flag_human_readable) {
             printf(" %10s ", human_readable_size((size_t)st.st_size).characters());
         } else {
-            printf(" %10zd ", st.st_size);
+            printf(" %10lld ", st.st_size);
         }
     }
 
diff --git a/Userland/Utilities/stat.cpp b/Userland/Utilities/stat.cpp
index 05501ced25..02b42038dd 100644
--- a/Userland/Utilities/stat.cpp
+++ b/Userland/Utilities/stat.cpp
@@ -48,7 +48,7 @@ static int stat(const char* file, bool should_follow_links)
     if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))
         printf("  Device: %u,%u\n", major(st.st_rdev), minor(st.st_rdev));
     else
-        printf("    Size: %zd\n", st.st_size);
+        printf("    Size: %lld\n", st.st_size);
     printf("   Links: %u\n", st.st_nlink);
     printf("  Blocks: %u\n", st.st_blocks);
     printf("     UID: %u", st.st_uid);