diff --git a/platform/kindle/koreader.sh b/platform/kindle/koreader.sh
index bd3c2a4ba..8f932f2ec 100755
--- a/platform/kindle/koreader.sh
+++ b/platform/kindle/koreader.sh
@@ -244,8 +244,8 @@ if [ "${FROM_KUAL}" == "yes" ] ; then
 	eips_print_bottom_centered "Starting KOReader . . ." 1
 fi
 
-# we keep maximum 100K worth of crash log
-cat crash.log 2> /dev/null | tail -c 100000000 > crash.log.new
+# we keep maximum 500K worth of crash log
+cat crash.log 2> /dev/null | tail -c 500000 > crash.log.new
 mv -f crash.log.new crash.log
 ./reader.lua "$@" >> crash.log 2>&1
 
diff --git a/platform/kobo/koreader.sh b/platform/kobo/koreader.sh
index 5fc5fc34c..703d146b2 100755
--- a/platform/kobo/koreader.sh
+++ b/platform/kobo/koreader.sh
@@ -111,8 +111,8 @@ if awk '$4~/(^|,)ro($|,)/' /proc/mounts | grep ' /mnt/sd ' ; then
 	mount -o remount,rw /mnt/sd
 fi
 
-# we keep maximum 100K worth of crash log
-cat crash.log 2> /dev/null | tail -c 100000000 > crash.log.new
+# we keep maximum 500K worth of crash log
+cat crash.log 2> /dev/null | tail -c 500000 > crash.log.new
 mv -f crash.log.new crash.log
 ./reader.lua "${args}" >> crash.log 2>&1
 RESULT=$?
diff --git a/platform/pocketbook/koreader.app b/platform/pocketbook/koreader.app
index 4173e7d5d..a6dab059e 100755
--- a/platform/pocketbook/koreader.app
+++ b/platform/pocketbook/koreader.app
@@ -33,8 +33,8 @@ else
     args="$@"
 fi
 
-# we keep maximum 100K worth of crash log
-cat crash.log 2> /dev/null | tail -c 100000000 > crash.log.new
+# we keep maximum 500K worth of crash log
+cat crash.log 2> /dev/null | tail -c 500000 > crash.log.new
 mv -f crash.log.new crash.log
 ./reader.lua "$args" >> crash.log 2>&1