diff --git a/etc/kaleidoscope-builder.conf b/etc/kaleidoscope-builder.conf
index 03339640..cab2ced4 100644
--- a/etc/kaleidoscope-builder.conf
+++ b/etc/kaleidoscope-builder.conf
@@ -102,7 +102,6 @@ if [ "${uname_S}" = "Darwin" ]; then
     }
 
     : "${ARDUINO_PATH:=/Applications/Arduino.app/Contents/Java/}"
-    : "${ARDUINO_PACKAGE_PATH:=${HOME}/Library/Arduino15/packages}"
     : "${ARDUINO_LOCAL_LIB_PATH:=${HOME}/Documents/Arduino}"
 
     MD5="md5"
@@ -155,7 +154,6 @@ elif [ "${uname_O}" = "Cygwin" ]; then
     # It's important that all of these be underneath /cygdrive/c so they can be converted to Windows paths that the
     # Windows Arduino binaries can understand.
     : "${ARDUINO_PATH:=/cygdrive/c/Program\ Files\ (x86)/Arduino}"
-    : "${ARDUINO_PACKAGE_PATH:=/cygdrive/c/Users/${USER}/AppData/Local/Arduino15/packages}"
     : "${ARDUINO_LOCAL_LIB_PATH:=/cygdrive/c/Users/${USER}/Arduino}"
     TMPDIR="${ARDUINO_LOCAL_LIB_PATH:-/cygdrive/c/Users/${USER}/AppData/Local/Temp}"
 
@@ -171,7 +169,6 @@ elif [ "${uname_O}" = "Cygwin" ]; then
     fi
 
     ARDUINO_PATH="$(realpath --relative-to=./ ${ARDUINO_PATH})"
-    ARDUINO_PACKAGE_PATH="$(realpath --relative-to=./ ${ARDUINO_PACKAGE_PATH})"
     ARDUINO_LOCAL_LIB_PATH="$(realpath --relative-to=./ ${ARDUINO_LOCAL_LIB_PATH})"
     TMPDIR="$(realpath --relative-to=./ ${ARDUINO_PATH})"
 
@@ -202,7 +199,6 @@ fi
 : "${ARDUINO_PATH:=/usr/local/arduino}"
 : "${ARDUINO_LOCAL_LIB_PATH:=${HOME}/Arduino}"
 : "${ARDUINO_TOOLS_PATH:=${ARDUINO_PATH}/hardware/tools}"
-: "${ARDUINO_PACKAGE_PATH:=${HOME}/.arduino15/packages}"
 
 ARDUINO_IDE_VERSION="10607"