diff --git a/CMakeLists.txt b/CMakeLists.txt
index c849b41..cfa931a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required (VERSION 3.7)
 include(GNUInstallDirs)
 
 project (rss2mastodon
-         VERSION 0.1.4
+         VERSION 0.1.5
          LANGUAGES CXX
 )
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -Wall")
diff --git a/src/rss2mastodon.cpp b/src/rss2mastodon.cpp
index 056813f..a5ed123 100644
--- a/src/rss2mastodon.cpp
+++ b/src/rss2mastodon.cpp
@@ -143,8 +143,10 @@ std::vector<string> parse_website(const string &profile, const string &xml)
 
                 for (const string &hashtag : watchwords)
                 {
-                    std::regex rehashtag("\\b(" + hashtag + ")\\b", std::regex_constants::icase);
-                    str = std::regex_replace(str, rehashtag, "#$1");
+                    std::regex rehashtag("\\b(" + hashtag + ")\\b",
+                                         std::regex_constants::icase);
+                    str = std::regex_replace(str, rehashtag, "#$1",
+                                             std::regex_constants::format_first_only);
                 }
                 str += "\n\n" + link + "\n\n#bot";
                 ret.push_back(str);