diff --git a/Arduino.mk b/Arduino.mk
index eb94a3c..7b1342e 100644
--- a/Arduino.mk
+++ b/Arduino.mk
@@ -568,7 +568,7 @@ endif
 
 ifndef PARSE_BOARD
     # result = $(call READ_BOARD_TXT, 'boardname', 'parameter')
-    PARSE_BOARD = $(shell grep -v '^\#' $(BOARDS_TXT) | grep $(1).$(2)= | cut -d = -f 2 )
+    PARSE_BOARD = $(shell grep -v '^\#' $(BOARDS_TXT) | grep "^[ \t]*$(1).$(2)=" | cut -d = -f 2)
 endif
 
 # If NO_CORE is set, then we don't have to parse boards.txt file
diff --git a/HISTORY.md b/HISTORY.md
index 4ccf650..62f74dc 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -11,6 +11,7 @@ I tried to give credit whenever possible. If I have missed anyone, kindly add it
 - New: Add option to split avrdude MCU from avr-gcc MCU (Issue #357) (https://github.com/hhgarnes)
 - New: Add support for /dev/tty.wchusbserial* (comes with cheap clones - DCCduino) (https://github.com/biesiad)
 - New: Add support for picocom as serial monitor (https://github.com/biesiad)
+- Tweak: Add support for Adafruit trinket3/trinket5/protrinket3/protrinket5 by improved BOARDS_TXT parsing (Issue #393) (https://github/com/zabereer)
 - Tweak: Looks for submenu items first when parsing BOARDS_TXT (Issue #347) (https://github.com/sej7278)
 - Tweak: Various spelling/grammar/typo fixes (https://github.com/dcousens)
 - Tweak: Clarified some 1.5+ issues in docs (Issue #352) (https://github.com/sej7278)