diff --git a/check b/check
index 139d0d7..b09f7d9 100755
--- a/check
+++ b/check
@@ -1,12 +1,16 @@
 #!/bin/bash
 
-export CHECKERHOME=`pwd`
-export CODEFILES="${CHECKERHOME}/CODEFILES"
-export HEADERFILES="${CHECKERHOME}/HEADERFILES"
+CHECKERHOME=$(pwd)
+CHECKERLIB=$(dirname $(readlink -e $0))
+# auf Mac muss man ggf. $CHECKERLIB manuell zu dem Ordner setzen, in dem die
+# Listen der zu testenden Funktionen liegen, wenn man noch irgendwie mit
+# symlinks rumfummelt, weil Mac das nicht standardkompliant kann. ;-)
+CODEFILES="${CHECKERHOME}/CODEFILES"
+HEADERFILES="${CHECKERHOME}/HEADERFILES"
 #export LPCFILES="${HEADERFILES} ${CODEFILES}"
-export LPCFILES="${CHECKERHOME}/LPCFILES"
-export MUDLIB="../mudlib"
-export LOGS="${CHECKERHOME}/logs"
+LPCFILES="${CHECKERHOME}/LPCFILES"
+MUDLIB="../mudlib"
+LOGS="${CHECKERHOME}/logs"
 
 LEVEL1="change_required"
 LEVEL2="formatting"
@@ -116,7 +120,7 @@
 	tee -a ${LOGS}/${2}.${LEVEL1}
 while read line
 do
-	grep -Hn -f ${CHECKERHOME}/bad_lfun.list $line >> ${LOGS}/${2}.${LEVEL1}
+	grep -Hn -f ${CHECKERLIB}/bad_lfun.list $line >> ${LOGS}/${2}.${LEVEL1}
 done < ${LPCFILES}
 
 # Unerwuenschte oder obsolete efuns
@@ -124,7 +128,7 @@
 	tee -a ${LOGS}/${2}.${LEVEL1}
 while read line
 do
-	grep -Hn -f ${CHECKERHOME}/bad_efun.list $line >> ${LOGS}/${2}.${LEVEL1}
+	grep -Hn -f ${CHECKERLIB}/bad_efun.list $line >> ${LOGS}/${2}.${LEVEL1}
 done < ${LPCFILES}
 
 # Unerwuenschte oder obsolete Properties
@@ -132,14 +136,14 @@
 	tee -a ${LOGS}/${2}.${LEVEL1}
 while read line
 do
-	grep -Hn -f ${CHECKERHOME}/bad_prop.list $line >> ${LOGS}/${2}.${LEVEL1}
+	grep -Hn -f ${CHECKERLIB}/bad_prop.list $line >> ${LOGS}/${2}.${LEVEL1}
 done < ${LPCFILES}
 
 # Unerwuenschte Events
 echo -ne "\n\nPruefe auf unerwuenschte Eventnamen...\n" | tee -a ${LOGS}/${2}.${LEVEL1}
 while read line
 do
-	grep -Hn -f ${CHECKERHOME}/bad_events.list $line >> ${LOGS}/${2}.${LEVEL1}
+	grep -Hn -f ${CHECKERLIB}/bad_events.list $line >> ${LOGS}/${2}.${LEVEL1}
 done < ${LPCFILES}
 
 # Keine clones von /std/thing
@@ -241,7 +245,7 @@
 	    tee -a ${LOGS}/${2}.${LEVEL5}
 while read line
 do
-	grep -Hn -f ${CHECKERHOME}/warn_efun.list $line \
+	grep -Hn -f ${CHECKERLIB}/warn_efun.list $line \
 	>> ${LOGS}/${2}.${LEVEL5}
 done < ${LPCFILES}
 
@@ -250,7 +254,7 @@
 sollte...\n" | tee -a ${LOGS}/${2}.${LEVEL5}
 while read line
 do
-	grep -EHn -f ${CHECKERHOME}/warn_prop.list $line \
+	grep -EHn -f ${CHECKERLIB}/warn_prop.list $line \
 	>> ${LOGS}/${2}.${LEVEL5}
 done < ${LPCFILES}