diff --git a/src/crashlog.cpp b/src/crashlog.cpp
--- a/src/crashlog.cpp
+++ b/src/crashlog.cpp
@@ -417,7 +417,7 @@ bool CrashLog::WriteScreenshot()
 
 	std::string filename = this->CreateFileName("", false);
 	bool res = MakeScreenshot(SC_CRASHLOG, filename);
-	if (res) this->screenshot_filename = _full_screenshot_name;
+	if (res) this->screenshot_filename = _full_screenshot_path;
 	return res;
 }
 
diff --git a/src/screenshot.cpp b/src/screenshot.cpp
--- a/src/screenshot.cpp
+++ b/src/screenshot.cpp
@@ -40,8 +40,8 @@ static const char * const HEIGHTMAP_NAME
 std::string _screenshot_format_name;  ///< Extension of the current screenshot format (corresponds with #_cur_screenshot_format).
 uint _num_screenshot_formats;         ///< Number of available screenshot formats.
 uint _cur_screenshot_format;          ///< Index of the currently selected screenshot format in #_screenshot_formats.
-static char _screenshot_name[128];    ///< Filename of the screenshot file.
-char _full_screenshot_name[MAX_PATH]; ///< Pathname of the screenshot file.
+static std::string _screenshot_name;  ///< Filename of the screenshot file.
+std::string _full_screenshot_path;    ///< Pathname of the screenshot file.
 uint _heightmap_highest_peak;         ///< When saving a heightmap, this contains the highest peak on the map.
 
 /**
@@ -668,43 +668,39 @@ static void LargeWorldCallback(void *use
  */
 static const char *MakeScreenshotName(const char *default_fn, const char *ext, bool crashlog = false)
 {
-	bool generate = StrEmpty(_screenshot_name);
+	bool generate = _screenshot_name.empty();
 
 	if (generate) {
 		if (_game_mode == GM_EDITOR || _game_mode == GM_MENU || _local_company == COMPANY_SPECTATOR) {
-			strecpy(_screenshot_name, default_fn, lastof(_screenshot_name));
+			_screenshot_name = default_fn;
 		} else {
-			strecpy(_screenshot_name, GenerateDefaultSaveName().c_str(), lastof(_screenshot_name));
+			_screenshot_name = GenerateDefaultSaveName();
 		}
 	}
 
-	size_t len = strlen(_screenshot_name);
-
 	/* Handle user-specified filenames ending in # with automatic numbering */
 	if (StrEndsWith(_screenshot_name, "#")) {
 		generate = true;
-		len -= 1;
-		_screenshot_name[len] = '\0';
+		_screenshot_name.pop_back();
 	}
 
+	size_t len = _screenshot_name.size();
 	/* Add extension to screenshot file */
-	seprintf(&_screenshot_name[len], lastof(_screenshot_name), ".%s", ext);
+	_screenshot_name += fmt::format(".{}", ext);
 
 	const char *screenshot_dir = crashlog ? _personal_dir.c_str() : FiosGetScreenshotDir();
 
 	for (uint serial = 1;; serial++) {
-		if (seprintf(_full_screenshot_name, lastof(_full_screenshot_name), "%s%s", screenshot_dir, _screenshot_name) >= (int)lengthof(_full_screenshot_name)) {
-			/* We need more characters than MAX_PATH -> end with error */
-			_full_screenshot_name[0] = '\0';
-			break;
-		}
+		_full_screenshot_path = fmt::format("{}{}", screenshot_dir, _screenshot_name);
+
 		if (!generate) break; // allow overwriting of non-automatic filenames
-		if (!FileExists(_full_screenshot_name)) break;
+		if (!FileExists(_full_screenshot_path)) break;
 		/* If file exists try another one with same name, but just with a higher index */
-		seprintf(&_screenshot_name[len], lastof(_screenshot_name) - len, "#%u.%s", serial, ext);
+		_screenshot_name.erase(len);
+		_screenshot_name += fmt::format("#{}.{}", serial, ext);
 	}
 
-	return _full_screenshot_name;
+	return _full_screenshot_path.c_str();
 }
 
 /** Make a screenshot of the current screen. */
@@ -922,8 +918,7 @@ static bool RealMakeScreenshot(Screensho
 		SetScreenshotWindowVisibility(false);
 	}
 
-	_screenshot_name[0] = '\0';
-	if (!name.empty()) strecpy(_screenshot_name, name.c_str(), lastof(_screenshot_name));
+	_screenshot_name = name;
 
 	bool ret;
 	switch (t) {
diff --git a/src/screenshot.h b/src/screenshot.h
--- a/src/screenshot.h
+++ b/src/screenshot.h
@@ -34,6 +34,6 @@ bool MakeMinimapWorldScreenshot();
 extern std::string _screenshot_format_name;
 extern uint _num_screenshot_formats;
 extern uint _cur_screenshot_format;
-extern char _full_screenshot_name[MAX_PATH];
+extern std::string _full_screenshot_path;
 
 #endif /* SCREENSHOT_H */