diff --git a/src/of_util.cpp b/src/of_util.cpp
index f68b5f2..19d26ec 100644
--- a/src/of_util.cpp
+++ b/src/of_util.cpp
@@ -166,19 +166,16 @@ ofString CCodec::rbs(const ofString& str)
     std::vector<char32_t> processed_chars;
 
     bool last_was_whitespace = false;
-    for (size_t i = 0; i < unicode_chars.size(); ++i) {
-        char32_t current = unicode_chars[i];
-
+    for (char32_t current : unicode_chars) {
         bool is_whitespace = (current == U' ' || current == U'\t' || current == U'\n' || current == U'\r');
+
         if (is_whitespace) {
-            bool near_non_ascii =
-                (i > 0 && unicode_chars[i - 1] > 0x7F) || (i + 1 < unicode_chars.size() && unicode_chars[i + 1] > 0x7F);
-            if (near_non_ascii || last_was_whitespace) {
-                continue;
-            }
-            current = U' ';
+            last_was_whitespace = true;
+            continue;
+        }
+        if (last_was_whitespace) {
+            last_was_whitespace = false;
         }
-        last_was_whitespace = is_whitespace;
         processed_chars.push_back(current);
     }
 
diff --git a/test/main.cpp b/test/main.cpp
index bed1164..6dd3efe 100644
--- a/test/main.cpp
+++ b/test/main.cpp
@@ -25,6 +25,10 @@ void testC()
     std::string source(u8"这是 一 个测试  用例。 ");
     std::string expect(u8"这是一个测试用例。");
     assert(CCodec::rbs(source) == expect);
+
+    std::string source1(u8"1.  氣 壓 不 足 2.  I/O 輸出未 設              定3.氣壓缸異常");
+    std::string expect1(u8"1.氣壓不足2.I/O輸出未設定3.氣壓缸異常");
+    assert(CCodec::rbs(source1) == expect1);
 }
 
 int main()