diff --git a/src/tokenizer.js b/src/tokenizer.js
index 501f9e4..a2a1b66 100644
--- a/src/tokenizer.js
+++ b/src/tokenizer.js
@@ -344,7 +344,7 @@ const TOKENIZE_RE = [
   /\b([Cc])([Oo])[\.][\,]([Ll])([Tt])([Dd])[\.]/g, "_$1$2dc$3$4$5_", // co.,ltd.
   /\b([Cc])([Oo])([Rr]?)([Pp]?)[\.]/g, "_$1$2$3$4_", // Corp. and Co.
   /\b([Ll])([Tt])([Dd])[\.]/g, "_$1$2$3_", // ltd.
-  /\b(prof|Prof|PROF)[\.]/g, "_$1_", //Prof. 
+  /\b(prof|Prof|PROF)\./g, "_$1_", //Prof. 
   //   /(\w+([\.-_]?\w+)*)@(\w+([\.-_]?\w+)*)\.(\w{2,3})/g, "$1__AT__$3.$5", //email addresses
   // /^\w+([\.-]?\w+)+@\w+([\.:]?\w+)+(\.[a-zA-Z0-9]{2,3})+$/g, "$1__AT__$2", //email addresses
   /\b([\w.]+)@(\w+\.\w+)/g, "$1__AT__$2",
diff --git a/test/tokenizer-tests.js b/test/tokenizer-tests.js
index 88bf875..0de1193 100644
--- a/test/tokenizer-tests.js
+++ b/test/tokenizer-tests.js
@@ -188,9 +188,15 @@ describe('Tokenizer', () => {
     expect(RiTa.tokenize("The programs.")).eql(["The", "programs", "."]);
     expect(RiTa.tokenize("The find.")).eql(["The", "find", "."]);
     expect(RiTa.tokenize("The bancor.", { debug: 0 })).eql(["The", "bancor", "."]);
+    expect(RiTa.tokenize("The prof. ate.", { debug: 0 })).eql(["The", "prof.", "ate", "."]);
 
     let input, expected, output;
 
+    input = "According to the prof. climate change was real.";
+    expected = ['According', 'to', 'the', 'prof.', 'climate', 'change', 'was', 'real', '.'];
+    output = RiTa.tokenize(input);
+    expect(output).eql(expected);
+
     input = "The student said 'learning is fun'";
     expected = ["The", "student", "said", "'", "learning", "is", "fun", "'"];
     output = RiTa.tokenize(input);