diff --git a/libraries/dateTimeHelpers/.arduino-ci.yml b/libraries/dateTimeHelpers/.arduino-ci.yml
index 86e8815a..77a333f9 100644
--- a/libraries/dateTimeHelpers/.arduino-ci.yml
+++ b/libraries/dateTimeHelpers/.arduino-ci.yml
@@ -20,9 +20,9 @@ compile:
     # - due
     # - zero
     # - leonardo
-    # - m4
-    # - esp32
-    # - esp8266
+    - m4
+    - esp32
+    - esp8266
     # - mega2560
-    # - rpipico
+    - rpipico
 
diff --git a/libraries/dateTimeHelpers/CHANGELOG.md b/libraries/dateTimeHelpers/CHANGELOG.md
index eb611231..d72e7b83 100644
--- a/libraries/dateTimeHelpers/CHANGELOG.md
+++ b/libraries/dateTimeHelpers/CHANGELOG.md
@@ -6,12 +6,16 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
-## [0.1.1] - 2023-03-07
+## [0.1.2] - 2023-01-18
+- fix build  (PM is a reserved word on M4 / samd platform)
+- minor fix changelog.md
+
+
+## [0.1.1] - 2023-01-07
 - initial release
 - clean up first version
 - add examples
 
-
 ## [0.1.0] - 2020-07-01
 - initial version
 
diff --git a/libraries/dateTimeHelpers/dateTimeHelpers.h b/libraries/dateTimeHelpers/dateTimeHelpers.h
index dd1fb9b2..dc91c662 100644
--- a/libraries/dateTimeHelpers/dateTimeHelpers.h
+++ b/libraries/dateTimeHelpers/dateTimeHelpers.h
@@ -2,7 +2,7 @@
 //
 //    FILE: datetimeHelpers.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.1
+// VERSION: 0.1.2
 // PURPOSE: Arduino library with date time helper functions.
 //    DATE: 2020-07-01
 //     URL: https://github.com/RobTillaart/dateTimeHelpers
@@ -145,7 +145,7 @@ char * seconds2clock12(uint32_t seconds, bool displaySeconds = false)
 //  (false)  00:00 ..    12:59 AM/PM
 char * seconds2clockAMPM(uint32_t seconds, bool displaySeconds = false)
 {
-  bool PM = false;
+  bool PMflag = false;
   char * buf = __dateTimeHelperBuffer;
   uint8_t pos = 0;
 
@@ -155,7 +155,7 @@ char * seconds2clockAMPM(uint32_t seconds, bool displaySeconds = false)
 
   if (hours >= 12)
   {
-    PM = true;
+    PMflag = true;
     if (hours > 12) hours -= 12;
   }
   uint8_t t = hours / 10;
@@ -175,7 +175,7 @@ char * seconds2clockAMPM(uint32_t seconds, bool displaySeconds = false)
   }
 
   buf[pos++] = ' ';
-  if (PM) buf[pos++] = 'P';
+  if (PMflag == true) buf[pos++] = 'P';
   else buf[pos++] = 'A';
   buf[pos++] = 'M';
   buf[pos]  = '\0';
diff --git a/libraries/dateTimeHelpers/library.json b/libraries/dateTimeHelpers/library.json
index 4871ed2c..9b403e74 100644
--- a/libraries/dateTimeHelpers/library.json
+++ b/libraries/dateTimeHelpers/library.json
@@ -15,7 +15,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/dateTimeHelpers.git"
   },
-  "version":"0.1.1",
+  "version":"0.1.2",
   "frameworks": "arduino",
   "platforms": "*"
 }
diff --git a/libraries/dateTimeHelpers/library.properties b/libraries/dateTimeHelpers/library.properties
index fb036f0c..09611fa3 100644
--- a/libraries/dateTimeHelpers/library.properties
+++ b/libraries/dateTimeHelpers/library.properties
@@ -1,5 +1,5 @@
 name=dateTimeHelpers
-version=0.1.1
+version=0.1.2
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Arduino library with date and time helper functions.
@@ -7,5 +7,5 @@ paragraph=
 category=Data Processing
 url=https://github.com/RobTillaart/dateTimeHelpers
 architectures=*
-includes=datetimeHelpers.h
+includes=dateTimeHelpers.h
 depends=