diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab8e908898..6bc4acd608 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@ Changes
 [#879](https://github.com/RaRe-Technologies/gensim/pull/879))
     - bigram construction can now support multiple bigrams within one sentence
 * Fixed issue #838, RuntimeWarning: overflow encountered in exp  (@markroxor, [#895](https://github.com/RaRe-Technologies/gensim/pull/895))
+*  Changed some log messages to warnings as suggested in issue #828. (@rhnvrm, [#884](https://github.com/RaRe-Technologies/gensim/pull/884))
+
 
 0.13.2, 2016-08-19
 
diff --git a/gensim/utils.py b/gensim/utils.py
index 9a571d5d25..a2557f07a2 100644
--- a/gensim/utils.py
+++ b/gensim/utils.py
@@ -10,7 +10,7 @@
 
 from __future__ import with_statement
 
-import logging
+import logging, warnings
 
 logger = logging.getLogger(__name__)
 
@@ -836,7 +836,7 @@ def run(self):
 
 
 if os.name == 'nt':
-    logger.info("detected Windows; aliasing chunkize to chunkize_serial")
+    warnings.warn("detected Windows; aliasing chunkize to chunkize_serial")
 
     def chunkize(corpus, chunksize, maxsize=0, as_numpy=False):
         for chunk in chunkize_serial(corpus, chunksize, as_numpy=as_numpy):
@@ -1011,7 +1011,7 @@ def has_pattern():
         from pattern.en import parse
         pattern = True
     except ImportError:
-        logger.info("Pattern library is not installed, lemmatization won't be available.")
+        warnings.warn("Pattern library is not installed, lemmatization won't be available.")
     return pattern